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<!DOCTYPE html> <html> <head> <style> .container { display: table; width: 90%; background-color: #2196F3; padding: 10px; } @supports (display: grid) { .container { display: grid; grid: auto; grid-gap: 10px; background-color: #2196F3; padding: 10px; } } .container > div { background-color: rgba(255, 255, 255, 0.8); text-align: center; padding: 20px 0; font-size: 30px; } </style> </head> <body> <h1>@supports 规则</h1> <p>如果浏览器支持 display: grid，则将应用 @supports 规则内的 CSS。如果不支持，则将应用 @supports 规则外的 .container 类：</p> <div class="container"> <div class="item1">1</div> <div class="item2">2</div> <div class="item3">3</div> <div class="item4">4</div> <div class="item5">5</div> <div class="item6">6</div> </div> </body> </html>