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<style type="text/css" media="screen">
ul li{
list-style-type:none;
padding-left:15px;
background: url(file:///C|/Users/huinawang/Desktop/1.png) no-repeat 4px 12px;
line-height:30px;
}
</style>
<title>column-rule-style</title>
</head>
<body>
<div class="hideNav-fixed-top">
<ul>
<li><a href="#">很多</a></li>
<li><a href="#">很多</a></li>
<li><a href="#">很多</a></li>
<li><a href="#">很多</a></li>
<li><a href="#">很多</a></li>
</ul>
</div>
<div ></div>
</body>
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console.log(scrollTop);
if(scrollTop>100){
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}else{
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