<!DOCTYPE html PUBLIC "-//W3C//DTD//XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head> <title>CSS Test: A flex container with the 'align-items' property set to 'stretch'</title> <link href="http://www.microsoft.com/" rel="author" title="Microsoft" /> <link href="http://www.w3.org/TR/css-flexbox-1/#align-items-property" rel="help" /> <link href="http://www.w3.org/TR/css-flexbox-1/#propdef-align-items" rel="help" /> <link href="reference/align-content-001-ref.xht" rel="match" /> <meta content="" name="flags" /> <meta content="This test checks that the flex container with 'align-items: stretch' places each flex item's margin box so that its cross size is the same as the cross size of the line." name="assert" /> <style type="text/css"> #flexbox { background: red; align-items: center; align-items: stretch; display: flex; height: 100px; width: 300px; } div div { background-color: green; width: 150px; } </style> </head> <body> <p>Test passes if there is no red visible on the page.</p> <div id="flexbox"> <div></div> <div></div> </div> </body></html>