css attribute selector example
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>2.属性选择器</title> <style type="text/css">
/*Element selector*/
ul {
padding: 0;
margin: 0;
width: 450px;
border: 1px dashed #666;
padding: 10px 5px;
}
ul:after { /*子块撑开父块*/
content:''; /*在子元素尾部添加空内容元素*/
display: block; /*并设置为块级显示*/
clear:both; /*清除二边的浮动*/
}
li {
list-style: none; /*去掉默认列表项样式*/
float: left; /*左浮动*/
width: 40px; /*设置宽度*/
height: 40px; /*设置高度*/
line-height: 40px; /*文本垂直居中*/
text-align: center; /*文本水平居中*/
border-radius: 50%; /*设置边框圆角*/
background: skyblue; /*背景色天蓝*/
margin-right: 5px; /*每个球之间的右外边距*/
}/*Select based on attribute name: For example, id attribute*/
*[id] { /*等价于: li[id]*/
/*background-color: red;*/
}/*Select based on attribute name and value: For example, select Elements with class="green"*/
li[class="green"] {
/*background-color: lightgreen;*/
}/*Select elements whose class attribute value includes the specified word*/
li[class ~= "red"] {
background-color: brown;
}/*Select the class class style starting with the letter 'ph' Element */
li[class ^= "ph"] {
background-color: coral;
}/*Selects class style elements ending with 's'*/
li[class $= "s"] {
background-color: lime; /*青绿*/
}/*Selects class style elements whose attribute value includes the specified letter 'e':;*/
li[class *= "e"] {
background-color: yellowgreen; /*234背景为黄绿色*/
}
</style>
</head>
<body>
<ul>
<li id="item1">1</li>
<li>2</li>
<li class="green red">3</li>
<li>4</li>
<li>5</li>
<li id="item2">6</li>
<li>7</li>
<li class="php css">8</li>
<li>9</li>
<li>10</li>
</ul>
</body>
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