<!DOCTYPE html> <html><head> <title>CSS Flex-basis Test</title> <link href="mailto:zhangcs_423@163.com" rel="author" title="Chunsheng Zhang"> <link href="http://www.w3.org/TR/css-flexbox-1/#flexibility" rel="help"> <link href="reference/flex-items-flexibility.htm" rel="match"> <meta content="flex items flexibility" name="assert"> <style type="text/css"> #container { display: flex; justify-content: center; align-items: center; border: 5px solid green; width: 600px; height: 200px; padding: 5px; border-radius: 3px; position: absolute; top: 70px; left: 10px; } div { padding: 10px; width: 30px; height: 40px; text-align: center; flex: 1 0 auto; } #flex { border: 2px dotted blue; background: green; border-radius: 3px; flex: 2 0 auto; } #fail-flag { position: absolute; padding: 10px; top: 150px; left: 183px; width: 254px; height: 40px; background: red; } </style> </head> <body> <p>This case tests that flex items flexibility</p> <p>The test passes if there is no red</p> <div id="fail-flag"></div> <section id="container"> <div></div> <div id="flex"></div> <div></div> </section> </body></html>