diff --git a/docs/assets/bootstrap.zip b/docs/assets/bootstrap.zip
index 6262fbb6cf..8b74593874 100644
Binary files a/docs/assets/bootstrap.zip and b/docs/assets/bootstrap.zip differ
diff --git a/docs/css-tests.html b/docs/css-tests.html
index 6dcec97985..081b27a570 100644
--- a/docs/css-tests.html
+++ b/docs/css-tests.html
@@ -75,18 +75,25 @@
     <div class="container">
 
 <style>
-body {
-  background-image: none;
-}
-.col1 {
-  background-color: rgba(255,0,0,.1);
-}
-.col2 {
-  background-color: rgba(0,255,0,.1);
-}
-.col3 {
-  background-color: rgba(0,0,255,.1);
-}
+  /* nuke background */
+  body {
+    background-image: none;
+  }
+  /* space out subhead */
+  .subhead {
+    margin-bottom: 36px;
+  }
+
+  /* colgroup tests */
+  .col1 {
+    background-color: rgba(255,0,0,.1);
+  }
+  .col2 {
+    background-color: rgba(0,255,0,.1);
+  }
+  .col3 {
+    background-color: rgba(0,0,255,.1);
+  }
 </style>
 
 <!-- Masthead
diff --git a/docs/templates/pages/css-tests.mustache b/docs/templates/pages/css-tests.mustache
index cde7484dc4..6f460569dd 100644
--- a/docs/templates/pages/css-tests.mustache
+++ b/docs/templates/pages/css-tests.mustache
@@ -1,16 +1,23 @@
 <style>
-body {
-  background-image: none;
-}
-.col1 {
-  background-color: rgba(255,0,0,.1);
-}
-.col2 {
-  background-color: rgba(0,255,0,.1);
-}
-.col3 {
-  background-color: rgba(0,0,255,.1);
-}
+  /* nuke background */
+  body {
+    background-image: none;
+  }
+  /* space out subhead */
+  .subhead {
+    margin-bottom: 36px;
+  }
+
+  /* colgroup tests */
+  .col1 {
+    background-color: rgba(255,0,0,.1);
+  }
+  .col2 {
+    background-color: rgba(0,255,0,.1);
+  }
+  .col3 {
+    background-color: rgba(0,0,255,.1);
+  }
 </style>
 
 <!-- Masthead