常用的二列布局,外容器Div定義class為container, 包含class分別為left 和main兩個子DIV,下邊是class為foot的Div
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>測試頁</title>
<style type="text/css">
.container{border:1px #333 solid; width:600px; margin-bottom:20px;}
.container .left{width:300px; float:left; height:100px; background:#f60;}
.container .right{width:300px; float:left; height:300px; background:#ccc;}
.foot{clear:both;width:600px;height:20px; background:#3D78B6;border:1px solid #000000;}
</style>
</head>
<body>
<div class="container">
<div class="left"></div>
<div class="right"></div>
</div>
<div class="foot"></div>
</body>
</html>
.container{overflow:hidden;border:1px #333 solid; width:600px; margin-bottom:20px;}
當我們想在container和foot之間加一點間隙時,fifefox卻發起了脾氣
代碼如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>測試頁</title><style type="text/css">
.container{border:1px #333 solid; width:600px; margin-bottom:20px;}
.container.container .left{width:300px; float:left; height:100px; background:#f60;}.container .right{width:300px; float:left; height:300px; background:#ccc;}.foot{clear:both;width:600px;height:20px; background:#3D78B6;border:1px solid #000000;}</style></head><body><div class="container"> <div class="left"></div> <div class="right"></div></div><div class="foot"></div></body></html>以上代碼在IE6中能正常顯示,但是在firefox中container和footer之間沒有間隙,也就是說margin-bottom:20沒起作用
解決變法:
修改container,代碼如下:
.container{overflow:hidden;border:1px #333 solid; width:600px; margin-bottom:20px;}區別就在這一句