css3画图那些事（三角形、圆形、梯形等）
闲来无事，写写图形。当时巩固一下css3吧.。前端小白，写的不好还请前辈多指教。
三角形
{
0;
height: 0;
border-bottom: 140px solid red ;
border-right: 70px solid transparent;
border-left: 70px solid transparent;
}
圆形
{
0px;
height: 0px;
border:50px solid red;
border-radius: 50%;
}
梯形
{
120px;
height: 0px;
border-bottom:120px solid red ;
border-right: 60px solid transparent;
border-left: 60px solid transparent;
}
平行四边形
{
0px;
height: 0px;
border:100px solid red ;
transform: skew(30deg);
}
菱形（实现方法有很多，这里只是两个三角形合并，也就是正三角和倒三角）
.a{
0;
height: 0;
border-bottom: 140px solid red ;
border-right: 70px solid transparent;
border-left: 70px solid transparent;
}
.b{
0;
height: 0;
border-top : 140px solid red;
border-left : 70px solid transparent;
border-right : 70px solid transparent;
}
椭圆形
{
200px;
height: 50px;
border:1px solid red;
border-radius:100px;
}
五边形（这里使用一个三角形加一个正方形实现）
.a{
0;
height: 0;
border-bottom : 140px solid red;
border-left : 70px solid transparent;
border-right : 70px solid transparent;
}
.b{
140px;
height: 140px;
display: inline-block;
border:1px solid red;
background-color: red ;
}
贪吃蛇蛇头你敢信？哈哈
{
0px;
height: 0px;
border-radius: 50%;
border:140px solid red;
border-right :140px solid transparent;
}
扇形
{
0px;
height: 0px;
border-radius: 50%;
border :140px solid transparent;
border-bottom:140px solid red;
}
登录icon（两个div，其中一个div设置一个margin-top的负值，移上来就好了）
.a{
0px;
height: 0px;
border-radius: 50%;
border: 30px solid #000;
}
.b{
0px;
border: 50px solid #000;
border-top-right-radius: 50px;
border-top-left-radius: 50px;
border-top- 25px;
border-bottom- 25px;
}
再来一个小视频 （用4个div拼接起来，两个圆圈，一个长方形，一个梯形就好了）
.a{
display: inline-block;
20px;
height: 20px;
border-radius: 50%;
border: 1px solid #000;
}
.b{
display: inline-block;
30px;
height: 30px;
border-radius: 50%;
border: 1px solid #000;
}
.c{
80px;
height: 50px;
border: 1px solid #000;
border-radius: 10px;
}
.d{
height: 40px;
border-right: 30px solid #000;
border-top: 16px solid transparent;
border-bottom: 16px solid transparent;
border-radius: 10px;
}
<div>
<div class="a" style="margin-left:160px ;margin-top: 100px;"></div>
<div class="b" ></div>
</div>
<div>
<div class="c" style="margin-left:150px ; display: inline-block;vertical-align: top;"></div>
<div class="d" style="margin-left:0px ; display: inline-block;margin-top: -10px;"></div>
</div>
再来一个垃圾桶 
三个图形叠加。正方形，椭圆，和梯形。然后在设置一个倾斜就好了
.a{
0px;
height: 0px;
border-radius: 4px;
border: 8px solid #000;
border-top- 0;
margin-left:164px ;
margin-top: 100px;
}
.b{
0px;
height: 0px;
border-radius:8px ;
border-top: 15px solid #000;
border-left: 132px solid #000;
margin-left: 108px;
}
.c{
78px;
border-bottom- 100px;
border-top: 100px solid #000;
border-left: 18px solid transparent;
border-right: 18px solid transparent;
}
<div style="display: inline-block;transform: rotate(9deg);">
<div class="a"></div>
<div class="b"></div>
</div>
<div style="margin-left: 110px; margin-top: 18px;">
<div class="c"></div>
</div>
最后老夫叫出一只大鸟，怕不怕。
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<style type="text/css">
body{
font-size: 0;
text-align: center;
}
.wrap{
position: relative;
500px;
margin: 0 auto;
}
.a{
display: inline-block;
margin-top: 30px;
250px;
height: 240px;
background-color:#f2b22e;
border: 1px solid #f2b22e;
border-radius: 60% 60% 70% 70%;
}
.b{
display: inline-block;
0;
height: 0;
border-bottom:40px solid #f2b22e;
border-right: 60px solid transparent;
border-left: 12px solid transparent;
transform: rotate(40deg);
position: absolute;
top: 26px;
right: 115px;
}
.c{
display: inline-block;
0;
height: 0;
border-top:60px solid #f2b22e;
border-right: 60px solid transparent;
border-left: 12px solid transparent;
transform: rotate(140deg);
position: absolute;
top: 26px;
left: 105px;
}
.d{
100px;
height: 40px;
border-radius: 50%;
border:1px solid #f2b22e;
background-color: #f2b22e;
transform: rotate(50deg);
position: absolute;
top: 150px;
right: 72px;
}
.e{
100px;
height: 40px;
border-radius: 50%;
border:1px solid #f2b22e;
background-color: #f2b22e;
transform: rotate(-50deg);
position: absolute;
top: 150px;
left: 72px;
}
.f{
40px;
height: 40px;
border: 20px solid #fff;
border-radius: 50%;
background-color: #000;
position: absolute;
top: 80px;
left: 155px;
}
.g{
40px;
height: 40px;
border: 20px solid #fff;
border-radius: 50%;
background-color: #000;
position: absolute;
top: 80px;
right: 155px;
}
.h{
0;
height: 0;
border-top:20px solid #e27326;
border-left:20px solid transparent;
border-right:20px solid transparent;
position: absolute;
top: 147px;
left: 230px;
}
.i{
160px;
height: 100px;
border:1px solid #f3cc74;
background-color: #f3cc74;
border-radius: 50%;
position: absolute;
bottom: 0px;
left: 170px;
}
.j{
12px;
border-bottom:20px solid #e27326;
border-radius: 50%;
position: absolute;
}
.j_{
bottom: 14px;
left: 163px;
}
.k{
left: 155px;
bottom: 18px;
}
.l{
left: 170px;
bottom: 10px;
}
.n{
bottom: 10px;
right: 163px;
}
.m{
bottom: 18px;
right: 155px;
}
.o{
bottom: 5px;
right: 170px;
}
</style>
<body>
<div class="wrap">
<div class="a"></div>
<div class="b"></div>
<div class="c"></div>
<div class="d"></div>
<div class="e"></div>
<div class="f"></div>
<div class="g"></div>
<div class="h"></div>
<div class="i"></div>
<div class="j j_"></div>
<div class="j k"></div>
<div class="j l"></div>
<div class="j n"></div>
<div class="j m"></div>
<div class="j o"></div>
</div>
</body>
</html>
原文出处：https://www.cnblogs.com/xzhan/p/9356203.html