diff --git a/index.html b/index.html
index 847246f..51bc120 100644
--- a/index.html
+++ b/index.html
@@ -52,6 +52,8 @@
 
       padding: 0 .3em;
       border-radius: 1em;
+
+      user-select: none;
     }
 
     .frame:hover {