怪我咯2017-04-17 11:15:22
首先更正一下一楼的答案,after/before是伪元素而不是伪类,这个很重要,不能把这个弄混淆了,如果是我我会用一个大圆覆盖长条,再用小圆覆盖大圆就好了
巴扎黑2017-04-17 11:15:22
<!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" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>css</title>
</head>
<body>
<style>
#a {
width: 150px;
height: 300px;
background: radial-gradient(circle at top left,
transparent 15px, #e6e4b7 0) top left,
radial-gradient(circle at top right,
transparent 15px, #e6e4b7 0) top right,
radial-gradient(circle at bottom right,
transparent 15px, #e6e4b7 0) bottom right,
radial-gradient(circle at bottom left,
transparent 15px, #e6e4b7 0) bottom left;
background-size: 50% 50%;
background-repeat: no-repeat;
padding: 20px 24px 22px 20px;
}
#b {
display: block;
background: radial-gradient(circle at top left,
transparent 15px, red 0) top left,
radial-gradient(circle at top right,
transparent 15px, red 0) top right,
radial-gradient(circle at bottom right,
transparent 15px, red 0) bottom right,
radial-gradient(circle at bottom left,
transparent 15px, red 0) bottom left;
background-size: 50% 50%;
background-repeat: no-repeat;
width:100%;
height: 100%;
padding: 2px;
}
#b:before {
content: "";
width: 100%;
height: 100%;
display: block;
background: radial-gradient(circle at top left,
transparent 15px, #e6e4b7 0) top left,
radial-gradient(circle at top right,
transparent 15px, #e6e4b7 0) top right,
radial-gradient(circle at bottom right,
transparent 15px, #e6e4b7 0) bottom right,
radial-gradient(circle at bottom left,
transparent 15px, #e6e4b7 0) bottom left;
background-size: 50% 50%;
background-repeat: no-repeat;
}
</style>
<p id="a">
<p id="b"></p>
</p>
</body>
</html>