Methods to invalidate the css style: 1. By changing the element name to invalidate the css in this area; 2. By setting a high-priority css style to overwrite this css style and make it invalid.
The operating environment of this tutorial: windows7 system, css3 version, DELL G3 computer.
Methods to invalidate the css style:
1. By changing the element name, we can achieve the purpose of invalidating the css in this area.
As we have already If the above separate style is set for #notice, you can cancel the style by changing the name of the element #notice
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript">
$(function() {
$("#notice").attr("id", "notice00");
});
</script>2. Overwrite this css style to make it invalid by setting a high-priority css style
Use !important to increase style priority.
<!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>Untitled Document</title>
<style type="text/css">
.aa{
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
background-color: #FF0000 !important
}
.bb{
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
background-color: #FF0000;
}
</style>
</head>
<body>
<div class="aa" style="background-color:#cc6600;font-size:16px;">中Class中包括:!important的样式
</div> <div class="bb" style="background-color:#cc6600">不包括的样式</div>
</body>
</html>Rendering:
Recommended related tutorials: CSS video tutorial
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