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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- <style>
- body{
- margin: 0;
- }
- .box{
- /* width: 400px; */
- /* height: 100%; */
- background-color: red;
- /* vh viewport height 视口高度 */
- /* vi viewport width 视口宽度 */
- height: 100vh;
- width: 100vw;
- }
- </style>
- </head>
- <body>
- <div class="box"></div>
- </body>
- </html>
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