<!DOCTYPE html><html><head><meta charset="UTF-8"><title>css三欄布局之float left與 相對width</title><style>.block1,.block2,.block3{float:left;width:32%;height:50px;border:1px dashed #F00;margin:2px;}.block1{background-color:red;}.block2{background-color:blue;}.block3{background-color:#ffe6b8;}</style></head><body><p class="block1">block1</p><p class="block2">block2</p><p class="block3">block3</p></body></html>
2.絕對位置，通過absolute 定位使其脫離文檔流，可以自適應定義三欄寬度
<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title>三欄布局css之絕對位置</title> <style> .left,.right{width: 200px;height: 200px; position: absolute;} .left{left:10px;background-color: red;} .right{right:10px;background-color: blue;} .center{margin:2px 210px ;background-color: yellow;height: 200px; } </style> </head> <body> <p class= "left">left</p> <p class = "right">right</p> <p class = "center">center</p> </body></html>
3.使用自身浮動，float left 和float right
<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title>三欄布局css之使用自身浮動</title> <style> .left,.right{width: 200px;height: 200px;} .left{float:left;background-color: red;} .right{float:right;background-color: blue;} .center{margin:2px 210px ;background-color: yellow;height: 200px; } </style> </head> <body> <p class= "left">left</p> <p class = "right">right</p> <p class = "center">center</p> </body></html>
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