div表格怎么居顶，求大侠指导_html/css_WEB-ITnose

html java 居顶

body {
font-family: "Times New Roman", "宋体", arial;
font-size: 12px;
margin:0 auto;
text-align: center;
background-image: url(images/background_top_0.png)
}
a:link, visited, hover, active {
text-decoration: none;
color: #000000;
}
#header {
position:relative;
margin-top:0px;
width: 1440px;
height: 196px;

}
#header-top {
position:relative;
margin-top:0px;
width: 1440px;
height: 30px;

background-image: url(images/background_0.png)
}
#box-top {
position:relative;
margin-top:0px;
left: 200px;
width: 920px;
height: 30px;
}

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