|  | <!DOCTYPE html> | 
|  | <title>CSS Images Test: Linear gradient with sibling-index()</title> | 
|  | <link rel="help" href="https://drafts.csswg.org/css-images/#linear-gradients"> | 
|  | <link rel="help" href="https://drafts.csswg.org/css-values-5/#tree-counting"> | 
|  | <link rel="match" href="linear-gradient-sibling-index-ref.html"> | 
|  | <style> | 
|  | .grad { | 
|  | width: 100px; | 
|  | height: 100px; | 
|  | background: linear-gradient(blue calc(10px * sibling-index()), yellow); | 
|  | } | 
|  | </style> | 
|  | <div> | 
|  | <div></div> | 
|  | <div class="grad"></div> | 
|  | <div></div> | 
|  | <div></div> | 
|  | <div class="grad"></div> | 
|  | </div> |