废话不多说,直接上代码: 1、上中下布局: !DOCTYPE html html lang=en head meta charset=UTF-8 meta name=viewport content=width=device-width, initial-scale=1.0 titleDocument/title style body { position: absolute; left: 0; ri
废话不多说,直接上代码:
1、上中下布局:
<!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 { position: absolute; left: 0; right: 0; top: 0; bottom: 0; padding: 0; margin: 0; display: flex; flex-direction: column; } .header, .footer { height: 50px; } .body { flex-grow: 1; background-color: #DDD; } </style> </head> <body> <div class="header">Header</div> <div class="body">Content</div> <div class="footer">Footer</div> </body> </html>
显示效果如下:
2、左右布局:
<!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 { position: absolute; left: 0; right: 0; top: 0; bottom: 0; padding: 0; margin: 0; display: flex; } .left, .right { height: 100%; } .left { width: 250px; background-color: rgba(255,0,0,0.3); } .right { display: flex; flex-direction: column; } .header, .footer { height: 50px; } .right, .content { flex-grow: 1; } .content { background-color: #DDD; } </style> </head> <body> <div class="left">LeftNav</div> <div class="right"> <div class="header">Header</div> <div class="content">Content</div> <div class="footer">Footer</div> </div> </body> </html>
页面的效果如下:
下面对几个关键的样式加以说明,这样就可以设计出任何想要的布局了:
flex-grow: 1; // 表示容器在主轴的宽度有多余时该子项占据剩余空间 position:absolute; left: 0;right: 0; top: 0; bottom: 0; // 这一组样式让该元素占满定位的父级元素
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