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+---
+title: Improve Compatibility with Browser Fallbacks
+---
+## Improve Compatibility with Browser Fallbacks
+
+<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds  -->
+We need to add a fallback to the ```background``` property of the ```.black-box`` class.
+
+### Example
+
+```css
+  :root {
+    --black-color: black;
+  }
+  .black-box {
+    background: var(--black-color);
+    width: 100px;
+    height: 100px;
+  }
+```
+
+## Solution
+
+Add a fallback to the ```background``` property before the existing background declaration:
+
+```css
+  :root {
+    --black-color: black;
+  }
+  .black-box {
+    background: black;
+    background: var(--black-color);
+    width: 100px;
+    height: 100px;
+  }
+```
+