Question

dreamweaver中box中又插入一个div，div填充了上边的边界，预览后发现整个box都下来了为什么

Answer 1

把代码贴出来看看！

追问

* {text-align:center;
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
color: #000000;
background-color: #FFFFFF;}
body {text-align:center;
font-family: "Times New Roman", Times, serif;
font-size: 12px;
line-height: 20px;
color: #000000;}
#top {background-color: #0099CC;
height: 3px;
width: 800px;
margin-top: 100px;}