<!DOCTYPE html> <meta charset="utf-8"> <title>CSS Flexbox Test: flex-basis - 0%</title> <link rel="author" title="Intel" href="http://www.intel.com"> <link rel="author" title="Intel" href="mailto:shiyoux.tan@intel.com"> <link rel="help" title="7.3.3. The 'flex-basis' property" href="http://www.w3.org/TR/css-flexbox-1/#flex-basis-property"> <link rel="match" href="../reference/ref-filled-green-100px-square.xht"> <meta name="assert" content="The 'flex-basis' property set '0%', the actual width of tested element is same as 0."> <style> #container { background-color: green; display: flex; height: 100px; width: 100px; } #test { background-color: red; flex-basis: 0%; height: 100px; width: 100px; } </style> <body> <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> <div id="container"> <div id="test"></div> </div> </body>