css向左浮动上方的margin
边距设为零了,但上方始终有空,求高人指点
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style type="text/css">
body{
     background-color:white;
     font-size:12px;
     font-family:Arial, Helvetica, sans-serif;
     margin:0px;
     padding:0px;
     color:white;
}
ul,li{
     margin:0px;
     padding:0px;
}
li{
     display:inline;
     list-style:none;
     list-style-position:outside;
     text-align:center;
     font-weight:bold;
     float:left;
}
a:link{
     color:#336601;
     text-decoration:none;
     float:left;
     width:100px;
     padding:3px 5px 0px 5px;
}
a:visited{
     color:#336601;
     text-decoration:none;
     float:left;
     padding:3px 5px 0px 5px;
     width:100px;
}
a:hover{
     color:white;
     float:left;
     padding:3px 3px 0px 20px;
     width:88px;
     text-decoration:none;
     background-color:#539D26;
}
a:active{
     color:white;
     float:left;
     padding:3px 3px 0px 20px;
     width:88px;
     text-decoration:none;
     background-color:#BD06B4;
}
#nav{
     width:600px;
     height:30px;
     border-bottom:0px;
     padding:0px 5px;
     position:absolute;
     z-index:1;
     left: 198px;
     top: 25px;
}
.list{
     line-height:20px;
     text-align:left;
     padding:4px;
     font-weight:normal;
}
.menu1{
     width:120px;
     height:auto;
     margin:6px 4px 0px 0px;
     border:1px solid #9CDD75;
     background-color:#F1FBEC;
     color:#336601;
     padding:6px 0px 0px 0px;
     cursor:hand;
     overflow-y:hidden;
     filter:Alpha(opacity=70);
     -moz-opacity:0.7;
}
.menu2{
     width:120px;
     height:18px;
     margin:6px 4px 0px 0px;
     background-color:#F5F5F5;
     color:#999900;
     border:1px solid #EEE8DD;
     padding:6px 0px 0px 0px;
     overflow-y:hidden;
     cursor:hand;
}
</style>
</head>
<body>
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