css/css-position/position-fixed-dynamic-transformed-sibling-ref.html - external/w3c/web-platform-tests - Git at Google

 <!doctype html>
 <meta charset=utf-8>
 <meta name="viewport" content="width=device-width">
 <style>
   body {
     margin: 0;
   }
   .fixed {
     position: fixed;
     top: 0;
     left: 0;
     width: 100%;
     height: 50px;
     background-color: blue;
   }
 </style>
 <div class="fixed"></div>
	<!doctype html>
	<meta charset=utf-8>
	<meta name="viewport" content="width=device-width">
	<style>
	body {
	margin: 0;
	}
	.fixed {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 50px;
	background-color: blue;
	}
	</style>
	<div class="fixed"></div>