时间：2021-07-01 10:21:17 帮助过：64人阅读
大都知道border属性有四个参数，那么border－radius必然也是有四个参数
我们知道border属性的四个参数分别是border-top,border-right,border-bottom,border-left.(按顺时针方向)
那么border-radius四个参数是什么了？
border-radius:上左，上右，下右，下左；
下面我们利用border-radius绘制一些大家平时常见的图片。
1.简单的圆形
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
#div{
width: 200px;
height: 200px;
background: red;
border-radius: 50%;
}
</style>
</head>
<body>
<div id="div">
</div>
</body>
</html>效果图：
2.椭圆
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
#div{
width: 100px;
height: 200px;
background: red;
border-radius: 50%;
}
</style>
</head>
<body>
<div id="div">
</div>
</body>
</html>效果图：
3.心型
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
#div{
position: relative;
width: 200px;
height: 180px;
border: 1px solid black;
}
.left{
position: absolute;
top: 0;
left: 100px;
width: 100px;
height: 170px;
background: red;
/*左下角为旋转基点*/
transform-origin: 0 100%;
transform: rotate(-45deg);
border-radius: 50% 50% 0 0;
/*让left的上左和上右变成圆形就可以*/
}
.right{
position: absolute;
top: 0;
left: 0px;
width: 100px;
height: 170px;
background: red;
/*右下角为旋转基点*/
transform-origin: 100% 100%;
transform: rotate(45deg);
border-radius: 50% 50% 0 0;
/*让right的上左和上右变成圆形就可以*/
}
</style>
</head>
<body>
<div id="div">
<div class="left"></div>
<div class="right"></div>
</div>
</body>
</html>效果图：
4.鸡蛋
我们听说达芬奇画鸡蛋，我在这里用css画鸡蛋
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
#div{
position: relative;
width: 100px;
height: 180px;
background: red;
border-radius: 50% 50% 50% 50%/60% 60% 40% 40%;
/*border-radius参数在／左右的区别，／左边是四个圆角的水平半径／右边是四个圆角垂直半径*/
}
</style>
</head>
<body>
<div id="div">
</div>
</body>
</html>效果图：
5.对话框
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
#div {
width: 120px;
height: 80px;
background: red;
position: relative;
border-radius: 10px;
margin-left: 50px;
}
#div:before {
content:"";
position: absolute;
right: 100%;
top: 26px;
width: 0;
height: 0;
border-top: 13px solid transparent;
border-right: 26px solid red;
border-bottom: 13px solid transparent;
}
</style>
</head>
<body>
<div id="div">
</div>
</body>
</html>效果图：
6.阴阳八卦
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
#baGua {
width: 96px;
height: 48px;
background: #eee;
border-color: red;
border-style: solid;
border-width: 2px 2px 50px 2px;
border-radius: 100%;
position: relative;
}
#baGua:before {
content: "";
position: absolute;
top: 50%;
left: 0;
background: #eee;
border: 18px solid red;
border-radius: 50%;
width: 12px;
height: 12px;
}
#baGua:after {
content: "";
position: absolute;
top: 50%;
left: 50%;
background: red;
border: 18px solid #eee;
border-radius:100%;
width: 12px;
height: 12px;
}
</style>
</head>
<body>
<div id="baGua">
</div>
</body>
</html>效果图：
7.无穷符号
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
#wuQ{
position: relative;
width: 212px;
height: 100px;
}
#wuQ:before{
content: "";
position: absolute;
top: 0;
left: 0;
width: 60px;
height: 60px;
border: 20px solid red;
border-radius: 50px 50px 0 50px;
/*下右不变圆弧*/
transform: rotate(-45deg);
}
#wuQ:after{
content: "";
position: absolute;
top: 0;
right: 0;
width: 60px;
height: 60px;
border: 20px solid red;
border-radius: 50px 50px 50px 0;
/*下左不变圆弧*/
transform: rotate(45deg);
}
</style>
</head>
<body>
<div id="wuQ">
</div>
</body>
</html>效果图：
以上就是css如何使用利用border和border-radius绘制一些小图形（代码实例）的详细内容，更多请关注Gxlcms其它相关文章！