diff --git a/index.html b/index.html
index ec1680849..f1c3fa0da 100644
--- a/index.html
+++ b/index.html
@@ -57,6 +57,10 @@
           <a class="sidebar__link" href="#popout-menu"><span>Popout menu</span></a>
           <a class="sidebar__link" href="#sibling-fade"><span>Sibling fade</span></a>
         </section>
+        <section data-type="other" class="sidebar__section">
+          <h4 class="sidebar__section-heading">other</h4>
+          <a class="sidebar__link" href="#custom-variables"><span>Custom variables</span></a>
+        </section>
       </div>
     </nav>
     <div class="content-wrapper">
@@ -83,6 +87,8 @@
               <i data-feather="loader"></i>animation</button>
             <button class="tags__tag is-large " data-type="interactivity">
               <i data-feather="edit-2"></i>interactivity</button>
+            <button class="tags__tag is-large " data-type="other">
+              <i data-feather="tag"></i>other</button>
           </nav>
           <div class="snippet">
             <h3 id="bouncing-loader"><span>Bouncing loader</span><span class="tags__tag snippet__tag" data-type="animation"><i data-feather="loader"></i>animation</span></h3>
@@ -497,6 +503,63 @@ in any specification.</span></p>
 
             <!-- tags: visual -->
           </div>
+          <div class="snippet">
+            <h3 id="custom-variables"><span>Custom variables</span><span class="tags__tag snippet__tag" data-type="other"><i data-feather="tag"></i>other</span></h3>
+            <p>CSS variables that contain specific values to be reused throughout a document.</p>
+            <h4 data-type="HTML">HTML</h4><pre><code class="lang-html">&lt;p class="custom-variables"&gt;CSS is awesome!&lt;/p&gt;
+</code></pre>
+            <h4 data-type="CSS">CSS</h4><pre><code class="lang-css">:root {
+  --some-color: #da7800;
+  --some-keyword: italic;
+  --some-size: 1.25em;
+  --some-complex-value: 1px 1px 2px whitesmoke, 0 0 1em slategray, 0 0 0.2em slategray;
+}
+.custom-variables {
+  color: var(--some-color);
+  font-size: var(--some-size);
+  font-style: var(--some-keyword);
+  text-shadow: var(--some-complex-value);
+}
+</code></pre>
+            <h4>Demo</h4>
+            <div class="snippet-demo">
+              <div class="snippet-demo__custom-variables">
+                <p>CSS is awesome!</p>
+              </div>
+            </div>
+            <style>
+              .snippet-demo__custom-variables {
+                --some-color: #686868;
+                --some-keyword: italic;
+                --some-size: 1.25em;
+                --some-complex-value: 1px 1px 2px whitesmoke, 0 0 1em slategray, 0 0 0.2em slategray;
+              }
+              .snippet-demo__custom-variables p {
+                color: var(--some-color);
+                font-size: var(--some-size);
+                font-style: var(--some-keyword);
+                text-shadow: var(--some-complex-value);
+              }
+            </style>
+            <h4>Explanation</h4>
+            <p>The variables are defined globally within the <code>:root</code> CSS pseudo-class which matches the root element of a tree representing the document. Variables can also be scoped to a selector if defined within the block.</p>
+            <p>Declare a variable with <code>--variable-name:</code>.</p>
+            <p>Reuse variables throughout the document using the <code>var(--variable-name)</code> function.</p>
+            <h4>Browser support</h4>
+            <div>
+              <div class="snippet__browser-support">
+                88.0%
+              </div>
+            </div>
+            <p><span class="snippet__support-note">✅ No caveats.</span></p>
+            <ul>
+              <li>
+                <a href="https://caniuse.com/#feat=css-variables" target="_blank">https://caniuse.com/#feat=css-variables</a>
+              </li>
+            </ul>
+
+            <!-- tags: other -->
+          </div>
           <div class="snippet">
             <h3 id="disable-selection"><span>Disable selection</span><span class="tags__tag snippet__tag" data-type="interactivity"><i data-feather="edit-2"></i>interactivity</span></h3>
             <p>Makes the content unselectable.</p>
@@ -1803,4 +1866,4 @@ var y = e.pageY - btn.offsetTop - btn.offsetParent.offsetTop
       </main>
     </div>
   </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/scripts/build.js b/scripts/build.js
index bc9f6f797..cef631b78 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -26,6 +26,10 @@ const TAGS = [
   {
     name: 'interactivity',
     icon: 'edit-2'
+  },
+  {
+    name: 'other',
+    icon: 'tag'
   }
 ]
 
diff --git a/snippets/custom-variables.md b/snippets/custom-variables.md
index f01324ff6..2313f4ff7 100644
--- a/snippets/custom-variables.md
+++ b/snippets/custom-variables.md
@@ -2,57 +2,66 @@
 
 CSS variables that contain specific values to be reused throughout a document.
 
+#### HTML
+
+```html
+<p class="custom-variables">CSS is awesome!</p>
+```
+
 #### CSS
 
 ```css
 :root {
-    --some-color: #da7800;
-    --some-keyword: italic;
-    --some-size: 1.25em;
-    --some-complex-value: 1px 1px 2px WhiteSmoke, 0 0 1em SlateGray , 0 0 0.2em SlateGray;
+  --some-color: #da7800;
+  --some-keyword: italic;
+  --some-size: 1.25em;
+  --some-complex-value: 1px 1px 2px whitesmoke, 0 0 1em slategray, 0 0 0.2em slategray;
+}
+
+.custom-variables {
+  color: var(--some-color);
+  font-size: var(--some-size);
+  font-style: var(--some-keyword);
+  text-shadow: var(--some-complex-value);
 }
 ```
 
 #### Demo
 
-<!-- You must create a `snippet-demo` parent block and use it as a namespace with BEM syntax. -->
-
 <div class="snippet-demo">
   <div class="snippet-demo__custom-variables">
     <p>CSS is awesome!</p>
   </div>
 </div>
 
-<!-- Add your style rules here. -->
-
 <style>
-:root {
-    --some-color: #686868;
-    --some-keyword: italic;
-    --some-size: 1.25em;
-    --some-complex-value: 1px 1px 2px WhiteSmoke, 0 0 1em SlateGray , 0 0 0.2em SlateGray;
+.snippet-demo__custom-variables {
+  --some-color: #686868;
+  --some-keyword: italic;
+  --some-size: 1.25em;
+  --some-complex-value: 1px 1px 2px whitesmoke, 0 0 1em slategray , 0 0 0.2em slategray;
 }
 
-.snippet-demo__custom-variables p{
-    color: var(--some-color);
-    font-size: var(--some-size);
-    font-style: var(--some-keyword);
-    text-shadow: var(--some-complex-value);
+.snippet-demo__custom-variables p {
+  color: var(--some-color);
+  font-size: var(--some-size);
+  font-style: var(--some-keyword);
+  text-shadow: var(--some-complex-value);
 }
-
 </style>
 
 #### Explanation
 
-Declare variable with `--variable-name:`.
+The variables are defined globally within the `:root` CSS pseudo-class which matches the root element of a tree representing the document. Variables can also be scoped to a selector if defined within the block.
 
-Reuse declared variable throughout the document using the `var(--variable-name)` function.
+Declare a variable with `--variable-name:`.
+
+Reuse variables throughout the document using the `var(--variable-name)` function.
 
 #### Browser support
 
-<span class="snippet__support-note">⚠️ This is an experimental technology.</span>
-
-<!-- Whenever possible, link a `caniuse` feature which allows the browser support percentage to be displayed.
-If no link is provided, it defaults to 99+%. -->
+<span class="snippet__support-note">✅ No caveats.</span>
 
 * https://caniuse.com/#feat=css-variables
+
+<!-- tags: other -->