diff --git a/Userland/Libraries/LibWeb/Layout/AvailableSpace.cpp b/Userland/Libraries/LibWeb/Layout/AvailableSpace.cpp
index 3cd4004f84..1622d5db04 100644
--- a/Userland/Libraries/LibWeb/Layout/AvailableSpace.cpp
+++ b/Userland/Libraries/LibWeb/Layout/AvailableSpace.cpp
@@ -11,6 +11,7 @@ namespace Web::Layout {
 
 AvailableSize AvailableSize::make_definite(CSSPixels value)
 {
+    VERIFY(isfinite(value.value()));
     return AvailableSize { Type::Definite, value };
 }
 
diff --git a/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
index 321457917f..c8273a01d0 100644
--- a/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
@@ -415,7 +415,14 @@ CSSPixels BlockFormattingContext::compute_table_box_width_inside_table_wrapper(B
     auto available_width = width_of_containing_block - margin_left.to_px(box) - margin_right.to_px(box);
 
     LayoutState throwaway_state(&m_state);
-    throwaway_state.get_mutable(box).set_content_width(available_width);
+    if (available_space.width.is_definite())
+        throwaway_state.get_mutable(box).set_content_width(available_width);
+    else if (available_space.width.is_min_content())
+        throwaway_state.get_mutable(box).set_min_content_width();
+    else {
+        VERIFY(available_space.width.is_max_content());
+        throwaway_state.get_mutable(box).set_max_content_width();
+    }
     auto context = create_independent_formatting_context_if_needed(throwaway_state, box);
     VERIFY(context);
     context->run(box, LayoutMode::IntrinsicSizing, m_state.get(box).available_inner_space_or_constraints_from(available_space));
diff --git a/Userland/Libraries/LibWeb/Layout/LayoutState.cpp b/Userland/Libraries/LibWeb/Layout/LayoutState.cpp
index 0149c863eb..d517d7437b 100644
--- a/Userland/Libraries/LibWeb/Layout/LayoutState.cpp
+++ b/Userland/Libraries/LibWeb/Layout/LayoutState.cpp
@@ -297,6 +297,7 @@ void LayoutState::UsedValues::set_node(NodeWithStyleAndBoxModelMetrics& node, Us
 
 void LayoutState::UsedValues::set_content_width(CSSPixels width)
 {
+    VERIFY(isfinite(width.value()));
     if (width < 0) {
         // Negative widths are not allowed in CSS. We have a bug somewhere! Clamp to 0 to avoid doing too much damage.
         dbgln_if(LIBWEB_CSS_DEBUG, "FIXME: Layout calculated a negative width for {}: {}", m_node->debug_description(), width);
@@ -308,6 +309,7 @@ void LayoutState::UsedValues::set_content_width(CSSPixels width)
 
 void LayoutState::UsedValues::set_content_height(CSSPixels height)
 {
+    VERIFY(isfinite(height.value()));
     if (height < 0) {
         // Negative heights are not allowed in CSS. We have a bug somewhere! Clamp to 0 to avoid doing too much damage.
         dbgln_if(LIBWEB_CSS_DEBUG, "FIXME: Layout calculated a negative height for {}: {}", m_node->debug_description(), height);
@@ -387,4 +389,18 @@ void LayoutState::UsedValues::set_indefinite_content_height()
     m_has_definite_height = false;
 }
 
+void LayoutState::UsedValues::set_min_content_width()
+{
+    width_constraint = SizeConstraint::MinContent;
+    m_content_width = 0;
+    m_has_definite_height = false;
+}
+
+void LayoutState::UsedValues::set_max_content_width()
+{
+    width_constraint = SizeConstraint::MaxContent;
+    m_content_width = INFINITY;
+    m_has_definite_height = false;
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/Layout/LayoutState.h b/Userland/Libraries/LibWeb/Layout/LayoutState.h
index 47814383f9..2b56e495b4 100644
--- a/Userland/Libraries/LibWeb/Layout/LayoutState.h
+++ b/Userland/Libraries/LibWeb/Layout/LayoutState.h
@@ -51,6 +51,8 @@ struct LayoutState {
 
         void set_indefinite_content_width();
         void set_indefinite_content_height();
+        void set_min_content_width();
+        void set_max_content_width();
 
         // NOTE: These are used by FlexFormattingContext to assign a temporary main size to items
         //       early on, so that descendants have something to resolve percentages against.