<!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 multi-line flex container with the 'align-content' property set to 'flex-start'</title> <link rel="author" title="Microsoft" href="http://www.microsoft.com/" /> <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#align-content-property" /> <link rel="match" href="reference/align-content-001-ref.html" /> <meta name="assert" content="This test checks that a multi-line flex container with 'align-content: flex-start' packs lines toward the start of the flex container." /> <meta name="fuzzy" content="maxDifference=0-1; totalPixels=0-6225" /> <style type="text/css"> #flexbox { background: linear-gradient(to bottom, red 0, red 50px, green 50px, green 100px); align-content: flex-start; display: flex; flex-flow: wrap; height: 100px; width: 300px; } div div { background-color: green; height: 26px; 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></div> <div></div> </div> </body> </html>