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Use of not() selector

php中世界最好的语言Original: 2018-03-22 17:23:593067browse

This time I will bring you the use of the not() selector. What are the precautions when using the not() selector? The following is a practical case, let's take a look.

What is used in this article is the new :not() pseudo-class selector in CSS3, which can match elements that do not contain selectors. Suppose there is a list, each list item has a bottom line, but the last item does not need a bottom line

The example code is as follows:

<!DOCTYPE>
<html>
<head>
<meta charset="utf-8" />
<title>使用:not() 最后一行li不添加边框</title>
<style type="text/css"></p>
<p>/* 
    使字体在所有设备上都达到最佳的显示
*/
html { 
 -moz-osx-font-smoothing: grayscale; 
 -webkit-font-smoothing: antialiased; 
 text-rendering: optimizeLegibility; 
}</p>
<p>/*
    给body添加阴影
*/
body:before {
 content: "";
 
position
: fixed;
 top: -10px;
 left: 0;
 width: 100%;
 height: 10px;
 -webkit-box-shadow: 0px 0px 10px rgba(0,0,0,.8);
 -moz-box-shadow: 0px 0px 10px rgba(0,0,0,.8);
 box-shadow: 0px 0px 10px rgba(0,0,0,.8);
 z-index: 100;
}</p>
<p>/*
 设置列表
*/
.listItem {
    border: 1px solid red;
}
.listItem ul {
    width: 100%;
    
overflow
:hidden;
}
.listItem ul,listItem li {
    margin:0;
    
padding
:0;
    
list-style
:none;
}
.listItem li {
   
margin-left
:10px;
}
/*
    li 最后一个元素不添加边框
*/
.listItem li:not(:last-child) {
    border-bottom:1px solid green;  
}
/*
    与第一个li相连兄弟
*/
.listItem  li
:first-child
 ~ li { border-left: 1px solid #666; }
</style>
</head></p>
<p><body></p>
<p> <p class="listItem">
     <ul>
            <li>列表1</li>
            <li>列表2</li>
            <li>列表3</li>
            <li>列表4</li>
            <li>列表5</li>
        </ul>
    </p>
</body>
</html>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Use of not() selector

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