style: closes #3702

- Adds the two-column class with the expected style for two-column unordered lists, making sure to keep the two-column style at Features and Table of Contents
- Removes column style from ul element scope

Author: marjys

docs/css/style.css

@@ -180,15 +180,18 @@ a.direct-link {
 
 ul {
   box-sizing: content-box;
-  column-count: 2;
-  column-gap: 30px;
   margin-top: 20px;
   padding: 0 15px;
 }
 
+h2#table-of-contents + ul,
+ul.two-column {
+  column-count: 2;
+  column-gap: 30px;
+}
+
 ul.single-column,
 ul.single-column > li > ul {
-  column-count: 1;
   margin-top: 0;
   padding-right: 0;
 }

docs/index.md

@@ -44,6 +44,7 @@ Mocha is a feature-rich JavaScript test framework running on [Node.js][] and in
 - [before, after, before each, after each hooks](#hooks)
 - [arbitrary transpiler support (coffee-script etc)](#-compilers)
 - [TextMate bundle](#textmate)
+  {:.two-column}
 
 ## Table of Contents