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<!DOCTYPE html> <html> <head> <style> #main { width: 350px; height: 350px; border: 1px solid #c3c3c3; display: flex; flex-direction: row; } #main div { width: 50px; height: 50px; } </style> </head> <body> <div id="main"> <div style="background-color:coral;">A</div> <div style="background-color:lightblue;">B</div> <div style="background-color:khaki;">C</div> <div style="background-color:pink;">D</div> <div style="background-color:lightgrey;">E</div> <div style="background-color:lightgreen;">F</div> </div> <p>请点击“试一试”按钮，将 flexDirection 属性的值设置为 “column-reverse”。</p> <button onclick="myFunction()">试一试</button> <p><b>注释：</b>Internet Explorer 10 及更早版本不支持 flexDirection 属性。</p> <script> function myFunction() { document.getElementById("main").style.flexDirection = "column-reverse"; } </script> </body> </html>