diff --git a/Userland/Libraries/LibWeb/CSS/ComputedValues.h b/Userland/Libraries/LibWeb/CSS/ComputedValues.h
index 0b1a410830..a8043b875b 100644
--- a/Userland/Libraries/LibWeb/CSS/ComputedValues.h
+++ b/Userland/Libraries/LibWeb/CSS/ComputedValues.h
@@ -50,6 +50,12 @@ public:
     static CSS::LengthBox inset() { return { CSS::Length::make_auto(), CSS::Length::make_auto(), CSS::Length::make_auto(), CSS::Length::make_auto() }; }
     static CSS::LengthBox margin() { return { CSS::Length::make_px(0), CSS::Length::make_px(0), CSS::Length::make_px(0), CSS::Length::make_px(0) }; }
     static CSS::LengthBox padding() { return { CSS::Length::make_px(0), CSS::Length::make_px(0), CSS::Length::make_px(0), CSS::Length::make_px(0) }; }
+    static CSS::Length width() { return CSS::Length::make_auto(); }
+    static CSS::Length min_width() { return CSS::Length::make_auto(); }
+    static CSS::Length max_width() { return CSS::Length::make_auto(); }
+    static CSS::Length height() { return CSS::Length::make_auto(); }
+    static CSS::Length min_height() { return CSS::Length::make_auto(); }
+    static CSS::Length max_height() { return CSS::Length::make_auto(); }
 };
 
 struct BackgroundLayerData {
@@ -150,12 +156,12 @@ public:
     CSS::JustifyContent justify_content() const { return m_noninherited.justify_content; }
     Vector<ShadowData> const& box_shadow() const { return m_noninherited.box_shadow; }
     CSS::BoxSizing box_sizing() const { return m_noninherited.box_sizing; }
-    Optional<CSS::LengthPercentage> const& width() const { return m_noninherited.width; }
-    Optional<CSS::LengthPercentage> const& min_width() const { return m_noninherited.min_width; }
-    Optional<CSS::LengthPercentage> const& max_width() const { return m_noninherited.max_width; }
-    Optional<CSS::LengthPercentage> const& height() const { return m_noninherited.height; }
-    Optional<CSS::LengthPercentage> const& min_height() const { return m_noninherited.min_height; }
-    Optional<CSS::LengthPercentage> const& max_height() const { return m_noninherited.max_height; }
+    CSS::LengthPercentage const& width() const { return m_noninherited.width; }
+    CSS::LengthPercentage const& min_width() const { return m_noninherited.min_width; }
+    CSS::LengthPercentage const& max_width() const { return m_noninherited.max_width; }
+    CSS::LengthPercentage const& height() const { return m_noninherited.height; }
+    CSS::LengthPercentage const& min_height() const { return m_noninherited.min_height; }
+    CSS::LengthPercentage const& max_height() const { return m_noninherited.max_height; }
     Variant<CSS::VerticalAlign, CSS::LengthPercentage> const& vertical_align() const { return m_noninherited.vertical_align; }
 
     CSS::LengthBox const& inset() const { return m_noninherited.inset; }
@@ -232,12 +238,12 @@ protected:
         Color text_decoration_color { InitialValues::color() };
         Vector<ShadowData> text_shadow {};
         CSS::Position position { InitialValues::position() };
-        Optional<CSS::LengthPercentage> width;
-        Optional<CSS::LengthPercentage> min_width;
-        Optional<CSS::LengthPercentage> max_width;
-        Optional<CSS::LengthPercentage> height;
-        Optional<CSS::LengthPercentage> min_height;
-        Optional<CSS::LengthPercentage> max_height;
+        CSS::LengthPercentage width { InitialValues::width() };
+        CSS::LengthPercentage min_width { InitialValues::min_width() };
+        CSS::LengthPercentage max_width { InitialValues::max_width() };
+        CSS::LengthPercentage height { InitialValues::height() };
+        CSS::LengthPercentage min_height { InitialValues::min_height() };
+        CSS::LengthPercentage max_height { InitialValues::max_height() };
         CSS::LengthBox inset { InitialValues::inset() };
         CSS::LengthBox margin { InitialValues::margin() };
         CSS::LengthBox padding { InitialValues::padding() };
diff --git a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
index 8aec140e5f..40a71d7ea7 100644
--- a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
+++ b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
@@ -205,25 +205,17 @@ RefPtr<StyleValue> ResolvedCSSStyleDeclaration::style_value_for_property(Layout:
         return StyleValueList::create(move(box_shadow), StyleValueList::Separator::Comma);
     }
     case CSS::PropertyID::Width:
-        return style_value_for_length_percentage(layout_node.computed_values().width().value_or(Length::make_auto()));
+        return style_value_for_length_percentage(layout_node.computed_values().width());
     case CSS::PropertyID::MinWidth:
-        if (!layout_node.computed_values().min_width().has_value())
-            return IdentifierStyleValue::create(CSS::ValueID::Auto);
-        return style_value_for_length_percentage(layout_node.computed_values().min_width().value());
+        return style_value_for_length_percentage(layout_node.computed_values().min_width());
     case CSS::PropertyID::MaxWidth:
-        if (!layout_node.computed_values().max_width().has_value())
-            return IdentifierStyleValue::create(CSS::ValueID::None);
-        return style_value_for_length_percentage(layout_node.computed_values().max_width().value());
+        return style_value_for_length_percentage(layout_node.computed_values().max_width());
     case CSS::PropertyID::Height:
-        return style_value_for_length_percentage(layout_node.computed_values().height().value_or(Length::make_auto()));
+        return style_value_for_length_percentage(layout_node.computed_values().height());
     case CSS::PropertyID::MinHeight:
-        if (!layout_node.computed_values().min_height().has_value())
-            return IdentifierStyleValue::create(CSS::ValueID::Auto);
-        return style_value_for_length_percentage(layout_node.computed_values().min_height().value());
+        return style_value_for_length_percentage(layout_node.computed_values().min_height());
     case CSS::PropertyID::MaxHeight:
-        if (!layout_node.computed_values().max_height().has_value())
-            return IdentifierStyleValue::create(CSS::ValueID::None);
-        return style_value_for_length_percentage(layout_node.computed_values().max_height().value());
+        return style_value_for_length_percentage(layout_node.computed_values().max_height());
     case CSS::PropertyID::Margin: {
         auto margin = layout_node.computed_values().margin();
         auto values = NonnullRefPtrVector<StyleValue> {};
diff --git a/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
index f4438f089c..c07742bcdb 100644
--- a/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
@@ -208,14 +208,14 @@ void BlockFormattingContext::compute_width(Box const& box, LayoutMode layout_mod
         return width;
     };
 
-    auto specified_width = computed_values.width().has_value() ? computed_values.width()->resolved(box, width_of_containing_block_as_length).resolved(box) : CSS::Length::make_auto();
+    auto specified_width = computed_values.width().resolved(box, width_of_containing_block_as_length).resolved(box);
 
     // 1. The tentative used width is calculated (without 'min-width' and 'max-width')
     auto used_width = try_compute_width(specified_width);
 
     // 2. The tentative used width is greater than 'max-width', the rules above are applied again,
     //    but this time using the computed value of 'max-width' as the computed value for 'width'.
-    auto specified_max_width = computed_values.max_width().has_value() ? computed_values.max_width()->resolved(box, width_of_containing_block_as_length).resolved(box) : CSS::Length::make_auto();
+    auto specified_max_width = computed_values.max_width().resolved(box, width_of_containing_block_as_length).resolved(box);
     if (!specified_max_width.is_auto()) {
         if (used_width.to_px(box) > specified_max_width.to_px(box)) {
             used_width = try_compute_width(specified_max_width);
@@ -224,7 +224,7 @@ void BlockFormattingContext::compute_width(Box const& box, LayoutMode layout_mod
 
     // 3. If the resulting width is smaller than 'min-width', the rules above are applied again,
     //    but this time using the value of 'min-width' as the computed value for 'width'.
-    auto specified_min_width = computed_values.min_width().has_value() ? computed_values.min_width()->resolved(box, width_of_containing_block_as_length).resolved(box) : CSS::Length::make_auto();
+    auto specified_min_width = computed_values.min_width().resolved(box, width_of_containing_block_as_length).resolved(box);
     if (!specified_min_width.is_auto()) {
         if (used_width.to_px(box) < specified_min_width.to_px(box)) {
             used_width = try_compute_width(specified_min_width);
@@ -298,14 +298,14 @@ void BlockFormattingContext::compute_width_for_floating_box(Box const& box, Layo
         return width;
     };
 
-    auto specified_width = computed_values.width().has_value() ? computed_values.width()->resolved(box, width_of_containing_block_as_length).resolved(box) : CSS::Length::make_auto();
+    auto specified_width = computed_values.width().resolved(box, width_of_containing_block_as_length).resolved(box);
 
     // 1. The tentative used width is calculated (without 'min-width' and 'max-width')
     auto width = compute_width(specified_width);
 
     // 2. The tentative used width is greater than 'max-width', the rules above are applied again,
     //    but this time using the computed value of 'max-width' as the computed value for 'width'.
-    auto specified_max_width = computed_values.max_width().has_value() ? computed_values.max_width()->resolved(box, width_of_containing_block_as_length).resolved(box) : CSS::Length::make_auto();
+    auto specified_max_width = computed_values.max_width().resolved(box, width_of_containing_block_as_length).resolved(box);
     if (!specified_max_width.is_auto()) {
         if (width.to_px(box) > specified_max_width.to_px(box))
             width = compute_width(specified_max_width);
@@ -313,7 +313,7 @@ void BlockFormattingContext::compute_width_for_floating_box(Box const& box, Layo
 
     // 3. If the resulting width is smaller than 'min-width', the rules above are applied again,
     //    but this time using the value of 'min-width' as the computed value for 'width'.
-    auto specified_min_width = computed_values.min_width().has_value() ? computed_values.min_width()->resolved(box, width_of_containing_block_as_length).resolved(box) : CSS::Length::make_auto();
+    auto specified_min_width = computed_values.min_width().resolved(box, width_of_containing_block_as_length).resolved(box);
     if (!specified_min_width.is_auto()) {
         if (width.to_px(box) < specified_min_width.to_px(box))
             width = compute_width(specified_min_width);
@@ -350,22 +350,21 @@ float BlockFormattingContext::compute_theoretical_height(FormattingState const&
     if (is<ReplacedBox>(box)) {
         height = compute_height_for_replaced_element(state, verify_cast<ReplacedBox>(box));
     } else {
-        if (!box.computed_values().height().has_value()
-            || (box.computed_values().height()->is_length() && box.computed_values().height()->length().is_auto())
-            || (computed_values.height().has_value() && computed_values.height()->is_percentage() && !is_absolute(containing_block.computed_values().height()))) {
+        if (box.computed_values().height().is_auto()
+            || (computed_values.height().is_percentage() && !is_absolute(containing_block.computed_values().height()))) {
             height = compute_auto_height_for_block_level_element(state, box);
         } else {
-            height = computed_values.height().has_value() ? computed_values.height()->resolved(box, containing_block_height).to_px(box) : 0;
+            height = computed_values.height().resolved(box, containing_block_height).to_px(box);
         }
     }
 
-    auto specified_max_height = computed_values.max_height().has_value() ? computed_values.max_height()->resolved(box, containing_block_height).resolved(box) : CSS::Length::make_auto();
+    auto specified_max_height = computed_values.max_height().resolved(box, containing_block_height).resolved(box);
     if (!specified_max_height.is_auto()
-        && !(computed_values.max_height().has_value() && computed_values.max_height()->is_percentage() && !is_absolute(containing_block.computed_values().height())))
+        && !(computed_values.max_height().is_percentage() && !is_absolute(containing_block.computed_values().height())))
         height = min(height, specified_max_height.to_px(box));
-    auto specified_min_height = computed_values.min_height().has_value() ? computed_values.min_height()->resolved(box, containing_block_height).resolved(box) : CSS::Length::make_auto();
+    auto specified_min_height = computed_values.min_height().resolved(box, containing_block_height).resolved(box);
     if (!specified_min_height.is_auto()
-        && !(computed_values.min_height().has_value() && computed_values.min_height()->is_percentage() && !is_absolute(containing_block.computed_values().height())))
+        && !(computed_values.min_height().is_percentage() && !is_absolute(containing_block.computed_values().height())))
         height = max(height, specified_min_height.to_px(box));
     return height;
 }
@@ -461,7 +460,7 @@ void BlockFormattingContext::layout_block_level_children(BlockContainer const& b
 
     if (layout_mode != LayoutMode::Normal) {
         auto& width = block_container.computed_values().width();
-        if (!width.has_value() || (width->is_length() && width->length().is_auto())) {
+        if (width.is_auto()) {
             auto& block_container_state = m_state.get_mutable(block_container);
             block_container_state.content_width = greatest_child_width(block_container);
         }
diff --git a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
index 9236edb369..4943f10771 100644
--- a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
@@ -277,9 +277,9 @@ float FlexFormattingContext::resolved_definite_cross_size(Box const& box) const
     else
         VERIFY(box.has_definite_width());
     auto const& cross_value = is_row_layout() ? box.computed_values().height() : box.computed_values().width();
-    if (cross_value->is_length())
-        return cross_value->length().to_px(box);
-    return cross_value->resolved(box, CSS::Length::make_px(specified_cross_size(flex_container()))).to_px(box);
+    if (cross_value.is_length())
+        return cross_value.length().to_px(box);
+    return cross_value.resolved(box, CSS::Length::make_px(specified_cross_size(flex_container()))).to_px(box);
 }
 
 float FlexFormattingContext::resolved_definite_main_size(Box const& box) const
@@ -289,9 +289,9 @@ float FlexFormattingContext::resolved_definite_main_size(Box const& box) const
     else
         VERIFY(box.has_definite_height());
     auto const& cross_value = is_row_layout() ? box.computed_values().width() : box.computed_values().height();
-    if (cross_value->is_length())
-        return cross_value->length().to_px(box);
-    return cross_value->resolved(box, CSS::Length::make_px(specified_main_size(flex_container()))).to_px(box);
+    if (cross_value.is_length())
+        return cross_value.length().to_px(box);
+    return cross_value.resolved(box, CSS::Length::make_px(specified_main_size(flex_container()))).to_px(box);
 }
 
 bool FlexFormattingContext::has_main_min_size(Box const& box) const
@@ -315,9 +315,7 @@ float FlexFormattingContext::specified_main_size_of_child_box(Box const& child_b
 {
     auto main_size_of_parent = specified_main_size(flex_container());
     auto& value = is_row_layout() ? child_box.computed_values().width() : child_box.computed_values().height();
-    if (!value.has_value())
-        return 0;
-    return value->resolved(child_box, CSS::Length::make_px(main_size_of_parent)).to_px(child_box);
+    return value.resolved(child_box, CSS::Length::make_px(main_size_of_parent)).to_px(child_box);
 }
 
 float FlexFormattingContext::specified_main_min_size(Box const& box) const
@@ -371,7 +369,7 @@ float FlexFormattingContext::calculated_main_size(Box const& box) const
 bool FlexFormattingContext::is_cross_auto(Box const& box) const
 {
     auto& cross_length = is_row_layout() ? box.computed_values().height() : box.computed_values().width();
-    return cross_length.has_value() && cross_length->is_length() && cross_length->length().is_auto();
+    return cross_length.is_auto();
 }
 
 bool FlexFormattingContext::is_main_axis_margin_first_auto(Box const& box) const
@@ -1195,7 +1193,7 @@ void FlexFormattingContext::determine_flex_container_used_cross_size(float const
     } else {
         // Flex container has indefinite cross size.
         auto cross_size_value = is_row_layout() ? flex_container().computed_values().height() : flex_container().computed_values().width();
-        if (!cross_size_value.has_value() || (cross_size_value->is_length() && cross_size_value->length().is_auto()) || cross_size_value->is_percentage()) {
+        if (cross_size_value.is_auto() || cross_size_value.is_percentage()) {
             // If a content-based cross size is needed, use the sum of the flex lines' cross sizes.
             float sum_of_flex_lines_cross_sizes = 0;
             for (auto& flex_line : m_flex_lines) {
@@ -1203,12 +1201,12 @@ void FlexFormattingContext::determine_flex_container_used_cross_size(float const
             }
             cross_size = sum_of_flex_lines_cross_sizes;
 
-            if (cross_size_value->is_percentage()) {
+            if (cross_size_value.is_percentage()) {
                 // FIXME: Handle percentage values here! Right now we're just treating them as "auto"
             }
         } else {
             // Otherwise, resolve the indefinite size at this point.
-            cross_size = cross_size_value->resolved(flex_container(), CSS::Length::make_px(specified_cross_size(*flex_container().containing_block()))).to_px(flex_container());
+            cross_size = cross_size_value.resolved(flex_container(), CSS::Length::make_px(specified_cross_size(*flex_container().containing_block()))).to_px(flex_container());
         }
     }
     set_cross_size(flex_container(), css_clamp(cross_size, cross_min_size, cross_max_size));
diff --git a/Userland/Libraries/LibWeb/Layout/FormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
index 7c7ef0f040..db57ee0f76 100644
--- a/Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
@@ -180,10 +180,10 @@ static Gfx::FloatSize solve_replaced_size_constraint(FormattingState const& stat
     auto width_of_containing_block = CSS::Length::make_px(containing_block_state.content_width);
     auto height_of_containing_block = CSS::Length::make_px(containing_block_state.content_height);
 
-    auto specified_min_width = box.computed_values().min_width().has_value() ? box.computed_values().min_width()->resolved(box, width_of_containing_block).to_px(box) : 0;
-    auto specified_max_width = box.computed_values().max_width().has_value() ? box.computed_values().max_width()->resolved(box, width_of_containing_block).to_px(box) : w;
-    auto specified_min_height = box.computed_values().min_height().has_value() ? box.computed_values().min_height()->resolved(box, height_of_containing_block).to_px(box) : 0;
-    auto specified_max_height = box.computed_values().max_height().has_value() ? box.computed_values().max_height()->resolved(box, height_of_containing_block).to_px(box) : h;
+    auto specified_min_width = box.computed_values().min_width().is_auto() ? 0 : box.computed_values().min_width().resolved(box, width_of_containing_block).to_px(box);
+    auto specified_max_width = box.computed_values().max_width().is_auto() ? w : box.computed_values().max_width().resolved(box, width_of_containing_block).to_px(box);
+    auto specified_min_height = box.computed_values().min_height().is_auto() ? 0 : box.computed_values().min_height().resolved(box, height_of_containing_block).to_px(box);
+    auto specified_max_height = box.computed_values().max_height().is_auto() ? h : box.computed_values().max_height().resolved(box, height_of_containing_block).to_px(box);
 
     auto min_width = min(specified_min_width, specified_max_width);
     auto max_width = max(specified_min_width, specified_max_width);
@@ -329,7 +329,7 @@ float FormattingContext::tentative_width_for_replaced_element(FormattingState co
 {
     auto const& containing_block = *box.containing_block();
     auto height_of_containing_block = CSS::Length::make_px(state.get(containing_block).content_height);
-    auto computed_height = box.computed_values().height().has_value() ? box.computed_values().height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto computed_height = box.computed_values().height().resolved(box, height_of_containing_block).resolved(box);
 
     float used_width = computed_width.to_px(box);
 
@@ -400,14 +400,14 @@ float FormattingContext::compute_width_for_replaced_element(FormattingState cons
     if (margin_right.is_auto())
         margin_right = zero_value;
 
-    auto specified_width = box.computed_values().width().has_value() ? box.computed_values().width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto specified_width = box.computed_values().width().resolved(box, width_of_containing_block).resolved(box);
 
     // 1. The tentative used width is calculated (without 'min-width' and 'max-width')
     auto used_width = tentative_width_for_replaced_element(state, box, specified_width);
 
     // 2. The tentative used width is greater than 'max-width', the rules above are applied again,
     //    but this time using the computed value of 'max-width' as the computed value for 'width'.
-    auto specified_max_width = box.computed_values().max_width().has_value() ? box.computed_values().max_width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto specified_max_width = box.computed_values().max_width().resolved(box, width_of_containing_block).resolved(box);
     if (!specified_max_width.is_auto()) {
         if (used_width > specified_max_width.to_px(box)) {
             used_width = tentative_width_for_replaced_element(state, box, specified_max_width);
@@ -416,7 +416,7 @@ float FormattingContext::compute_width_for_replaced_element(FormattingState cons
 
     // 3. If the resulting width is smaller than 'min-width', the rules above are applied again,
     //    but this time using the value of 'min-width' as the computed value for 'width'.
-    auto specified_min_width = box.computed_values().min_width().has_value() ? box.computed_values().min_width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto specified_min_width = box.computed_values().min_width().resolved(box, width_of_containing_block).resolved(box);
     if (!specified_min_width.is_auto()) {
         if (used_width < specified_min_width.to_px(box)) {
             used_width = tentative_width_for_replaced_element(state, box, specified_min_width);
@@ -432,7 +432,7 @@ float FormattingContext::tentative_height_for_replaced_element(FormattingState c
 {
     auto const& containing_block = *box.containing_block();
     auto width_of_containing_block = CSS::Length::make_px(state.get(containing_block).content_width);
-    auto computed_width = box.computed_values().width().has_value() ? box.computed_values().width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto computed_width = box.computed_values().width().resolved(box, width_of_containing_block).resolved(box);
 
     // If 'height' and 'width' both have computed values of 'auto' and the element also has
     // an intrinsic height, then that intrinsic height is the used value of 'height'.
@@ -467,8 +467,8 @@ float FormattingContext::compute_height_for_replaced_element(FormattingState con
     auto const& containing_block_state = state.get(containing_block);
     auto width_of_containing_block = CSS::Length::make_px(containing_block_state.content_width);
     auto height_of_containing_block = CSS::Length::make_px(containing_block_state.content_height);
-    auto specified_width = box.computed_values().width().has_value() ? box.computed_values().width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
-    auto specified_height = box.computed_values().height().has_value() ? box.computed_values().height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto specified_width = box.computed_values().width().resolved(box, width_of_containing_block).resolved(box);
+    auto specified_height = box.computed_values().height().resolved(box, height_of_containing_block).resolved(box);
 
     float used_height = tentative_height_for_replaced_element(state, box, specified_height);
 
@@ -591,14 +591,14 @@ void FormattingContext::compute_width_for_absolutely_positioned_non_replaced_ele
         return width;
     };
 
-    auto specified_width = computed_values.width().has_value() ? computed_values.width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto specified_width = computed_values.width().resolved(box, width_of_containing_block).resolved(box);
 
     // 1. The tentative used width is calculated (without 'min-width' and 'max-width')
     auto used_width = try_compute_width(specified_width);
 
     // 2. The tentative used width is greater than 'max-width', the rules above are applied again,
     //    but this time using the computed value of 'max-width' as the computed value for 'width'.
-    auto specified_max_width = computed_values.max_width().has_value() ? computed_values.max_width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto specified_max_width = computed_values.max_width().resolved(box, width_of_containing_block).resolved(box);
     if (!specified_max_width.is_auto()) {
         if (used_width.to_px(box) > specified_max_width.to_px(box)) {
             used_width = try_compute_width(specified_max_width);
@@ -607,7 +607,7 @@ void FormattingContext::compute_width_for_absolutely_positioned_non_replaced_ele
 
     // 3. If the resulting width is smaller than 'min-width', the rules above are applied again,
     //    but this time using the value of 'min-width' as the computed value for 'width'.
-    auto specified_min_width = computed_values.min_width().has_value() ? computed_values.min_width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto specified_min_width = computed_values.min_width().resolved(box, width_of_containing_block).resolved(box);
     if (!specified_min_width.is_auto()) {
         if (used_width.to_px(box) < specified_min_width.to_px(box)) {
             used_width = try_compute_width(specified_min_width);
@@ -650,15 +650,15 @@ void FormattingContext::compute_height_for_absolutely_positioned_non_replaced_el
     CSS::Length specified_bottom = computed_values.inset().bottom.resolved(box, height_of_containing_block).resolved(box);
     CSS::Length specified_height = CSS::Length::make_auto();
 
-    if (computed_values.height().has_value() && computed_values.height()->is_percentage()
-        && !(containing_block.computed_values().height().has_value() && containing_block.computed_values().height()->is_length() && containing_block.computed_values().height()->length().is_absolute())) {
+    if (computed_values.height().is_percentage()
+        && !(containing_block.computed_values().height().is_length() && containing_block.computed_values().height().length().is_absolute())) {
         // specified_height is already auto
     } else {
-        specified_height = computed_values.height().has_value() ? computed_values.height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
+        specified_height = computed_values.height().resolved(box, height_of_containing_block).resolved(box);
     }
 
-    auto specified_max_height = computed_values.max_height().has_value() ? computed_values.max_height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
-    auto specified_min_height = computed_values.min_height().has_value() ? computed_values.min_height()->resolved(box, height_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto specified_max_height = computed_values.max_height().resolved(box, height_of_containing_block).resolved(box);
+    auto specified_min_height = computed_values.min_height().resolved(box, height_of_containing_block).resolved(box);
 
     box_state.margin_top = computed_values.margin().top.resolved(box, width_of_containing_block).to_px(box);
     box_state.margin_bottom = computed_values.margin().bottom.resolved(box, width_of_containing_block).to_px(box);
@@ -697,7 +697,7 @@ void FormattingContext::layout_absolutely_positioned_element(Box const& box)
     auto height_of_containing_block = CSS::Length::make_px(containing_block_state.content_height);
     auto& box_state = m_state.get_mutable(box);
 
-    auto specified_width = box.computed_values().width().has_value() ? box.computed_values().width()->resolved(box, width_of_containing_block).resolved(box) : CSS::Length::make_auto();
+    auto specified_width = box.computed_values().width().resolved(box, width_of_containing_block).resolved(box);
 
     compute_width_for_absolutely_positioned_element(box);
     auto independent_formatting_context = layout_inside(box, LayoutMode::Normal);
diff --git a/Userland/Libraries/LibWeb/Layout/InlineFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
index a74235edd3..c276de356c 100644
--- a/Userland/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
@@ -124,7 +124,7 @@ void InlineFormattingContext::dimension_box_on_line(Box const& box, LayoutMode l
         auto const& containing_block_state = m_state.get(containing_block());
 
         auto& width_value = inline_block.computed_values().width();
-        if (!width_value.has_value() || (width_value->is_length() && width_value->length().is_auto())) {
+        if (width_value.is_auto()) {
             auto result = calculate_shrink_to_fit_widths(inline_block);
 
             auto available_width = containing_block_state.content_width
@@ -139,17 +139,17 @@ void InlineFormattingContext::dimension_box_on_line(Box const& box, LayoutMode l
             box_state.content_width = width;
         } else {
             auto container_width = CSS::Length::make_px(containing_block_state.content_width);
-            box_state.content_width = width_value->resolved(box, container_width).to_px(inline_block);
+            box_state.content_width = width_value.resolved(box, container_width).to_px(inline_block);
         }
         auto independent_formatting_context = layout_inside(inline_block, layout_mode);
 
         auto& height_value = inline_block.computed_values().height();
-        if (!height_value.has_value() || (height_value->is_length() && height_value->length().is_auto())) {
+        if (height_value.is_auto()) {
             // FIXME: (10.6.6) If 'height' is 'auto', the height depends on the element's descendants per 10.6.7.
             BlockFormattingContext::compute_height(inline_block, m_state);
         } else {
             auto container_height = CSS::Length::make_px(containing_block_state.content_height);
-            box_state.content_height = height_value->resolved(box, container_height).to_px(inline_block);
+            box_state.content_height = height_value.resolved(box, container_height).to_px(inline_block);
         }
 
         independent_formatting_context->parent_context_did_dimension_child_root_box();
diff --git a/Userland/Libraries/LibWeb/Layout/SVGFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/SVGFormattingContext.cpp
index 8bf7ac3509..f2a2a83354 100644
--- a/Userland/Libraries/LibWeb/Layout/SVGFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/SVGFormattingContext.cpp
@@ -37,8 +37,8 @@ void SVGFormattingContext::run(Box const& box, LayoutMode)
                 auto& layout_node = static_cast<Layout::Node&>(*(svg_element->layout_node()));
 
                 // FIXME: Allow for relative lengths here
-                geometry_box_state.content_width = layout_node.computed_values().width().value().resolved(layout_node, { 0, CSS::Length::Type::Px }).to_px(layout_node);
-                geometry_box_state.content_height = layout_node.computed_values().height().value().resolved(layout_node, { 0, CSS::Length::Type::Px }).to_px(layout_node);
+                geometry_box_state.content_width = layout_node.computed_values().width().resolved(layout_node, { 0, CSS::Length::Type::Px }).to_px(layout_node);
+                geometry_box_state.content_height = layout_node.computed_values().height().resolved(layout_node, { 0, CSS::Length::Type::Px }).to_px(layout_node);
 
                 return IterationDecision::Continue;
             }
diff --git a/Userland/Libraries/LibWeb/Layout/TableFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/TableFormattingContext.cpp
index 4833ccfa79..907ba5bd87 100644
--- a/Userland/Libraries/LibWeb/Layout/TableFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/TableFormattingContext.cpp
@@ -29,7 +29,7 @@ void TableFormattingContext::run(Box const& box, LayoutMode)
 
     compute_width(box);
     auto table_width = CSS::Length::make_px(box_state.content_width);
-    auto table_width_is_auto = box.computed_values().width().has_value() && box.computed_values().width()->is_length() && box.computed_values().width()->length().is_auto();
+    auto table_width_is_auto = box.computed_values().width().is_auto();
 
     float total_content_width = 0;
     float total_content_height = 0;
@@ -94,7 +94,7 @@ void TableFormattingContext::run(Box const& box, LayoutMode)
             content_height += row_state.content_height;
         });
 
-        if (row_group_box.computed_values().width().has_value() && row_group_box.computed_values().width()->is_length() && row_group_box.computed_values().width()->length().is_auto())
+        if (row_group_box.computed_values().width().is_auto())
             row_group_box_state.content_width = content_width;
         row_group_box_state.content_height = content_height;
 
@@ -117,7 +117,7 @@ void TableFormattingContext::calculate_column_widths(Box const& row, CSS::Length
     row.for_each_child_of_type<TableCellBox>([&](auto& cell) {
         auto& cell_state = m_state.get_mutable(cell);
         auto const& computed_values = cell.computed_values();
-        auto specified_width = computed_values.width().has_value() ? computed_values.width()->resolved(cell, table_width).resolved(cell) : CSS::Length::make_auto();
+        auto specified_width = computed_values.width().resolved(cell, table_width).resolved(cell);
 
         compute_width(cell, specified_width.is_auto() ? LayoutMode::MinContent : LayoutMode::Normal);
         (void)layout_inside(cell, LayoutMode::Normal);
@@ -166,7 +166,7 @@ void TableFormattingContext::layout_row(Box const& row, Vector<ColumnWidth>& col
     float tallest_cell_height = 0;
     float content_width = 0;
     auto* table = row.first_ancestor_of_type<TableBox>();
-    bool use_auto_layout = !table || (!table->computed_values().width().has_value() || (table->computed_values().width()->is_length() && table->computed_values().width()->length().is_auto()));
+    bool use_auto_layout = !table || table->computed_values().width().is_auto();
 
     row.for_each_child_of_type<TableCellBox>([&](auto& cell) {
         auto& cell_state = m_state.get_mutable(cell);
diff --git a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
index a8fbbba311..8de189a7ef 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
@@ -70,8 +70,8 @@ Optional<float> SVGGraphicsElement::stroke_width() const
         float viewport_height = 0;
         if (auto* svg_svg_element = first_ancestor_of_type<SVGSVGElement>()) {
             if (auto* svg_svg_layout_node = svg_svg_element->layout_node()) {
-                viewport_width = svg_svg_layout_node->computed_values().width().value().resolved(*svg_svg_layout_node, { 0, CSS::Length::Type::Px }).to_px(*svg_svg_layout_node);
-                viewport_height = svg_svg_layout_node->computed_values().height().value().resolved(*svg_svg_layout_node, { 0, CSS::Length::Type::Px }).to_px(*svg_svg_layout_node);
+                viewport_width = svg_svg_layout_node->computed_values().width().resolved(*svg_svg_layout_node, { 0, CSS::Length::Type::Px }).to_px(*svg_svg_layout_node);
+                viewport_height = svg_svg_layout_node->computed_values().height().resolved(*svg_svg_layout_node, { 0, CSS::Length::Type::Px }).to_px(*svg_svg_layout_node);
             }
         }
         auto scaled_viewport_size = CSS::Length::make_px((viewport_width + viewport_height) * 0.5f);