<!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>test页面</title>
<style type="text/css">
/*关于css3 的两个伪类 ::before ::after*/
.box{
margin: 0 auto;
width: 360px;
height: 500px;
}
/*头部*/
.box_head{
margin: 0px auto;
width: 260px;
height: 140px;
background-color: greenyellow;
border-radius: 130px 130px 0 0;
}
.box_head::before{
content:'';
display: block;
width: 26px;
height: 26px;
border-radius: 13px;
background-color: white;
transform: translate(170px,58px);
}
.box_head::after{
content:'';
display: block;
width: 26px;
height: 26px;
border-radius: 13px;
background-color: white;
transform:translate(65px,33px);
}
/*中间*/
.box_conten{
margin: 0px auto;
margin-top:10px;
width: 260px;
height: 240px;
background-color: greenyellow;
border-radius: 0 0 30px 30px;
}
.box_conten::before{
content:'';
display: block;
width: 50px;
height: 180px;
border-radius: 12px;
background-color: greenyellow;
transform: translate(-70px,20px);
}
.box_conten::after{
content:'';
display: block;
width: 50px;
height: 180px;
border-radius: 12px;
background-color:greenyellow;
transform:translate(280px,-162px);
}
/*底部*/
.footer{
margin: 0px auto;
width:50px;
height: 20px;
}
.footer::before{
content:'';
display: block;
width: 50px;
height: 135px;
border-radius: 0 0 15px 15px;
background-color: greenyellow;
transform: translate(-51px,-8px);
}
.footer::after{
content:'';
display: block;
width: 50px;
height: 135px;
border-radius: 0 0 15px 15px;
background-color: greenyellow;
transform: translate(51px,-143px);
}
</style>
</head>
<body>
<div class="box">
<div class="box_head"></div>
<div class="box_conten"></div>
<div class="footer"></div>
</div>
</body>
</html>
<!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>test页面</title>
<style type="text/css">
div{
margin: 10px auto;
width: 500px;
height: 200px;
background-color: darkgray;
text-align: center;
line-height: 180px;;
}
a {
position: relative;
display: inline-block;
outline: none;
text-decoration: none;
color:#fff;
font-size: 30px;
margin-right: 50px;
}
/* 大框 */
a:hover::before{
content: "\5B";
left: -15px;
color: red;
font-weight: 800;
display: block;
position: absolute;
}
a:hover::after {
content: "\5D";
color: red;
font-weight: 800;
padding: 0px 5px;
}
</style>
</head>
<body>
<div>
<a href="#">ONE A</a><a href="#">TWO B</a>
</div>
</body>
</html>
