利用CSS绘制各种常见的图形

利用CSS绘制各种常见的图形

只要有一定前端代码基础，结合一些CSS小技巧，就可以用CSS绘制各种我们常见的图形（圆形，同心圆，菱形，平行四边形，心形，梯形，三角形，五角星，六角星，饼状图，

椭圆，圆锥形，气泡对话框框，鸡蛋，钻石形，五边形，欧朋浏览器标志，鸡蛋等），看到这，小伙伴们，是不是想跃跃欲试啦，别急，下面就为大家一一介绍这些形状是怎样绘制的吧！

正方形

.square1{

width: 100px;

height: 100px;

background: #FF00D4;

}

/* 上面的方法是设置宽度和高度一致就可以实现正方形的效果，下面是用边框border制作正方形 */

.square2{

width: 0;

height: 0;

border: 50px solid #FF00D4; /*边框大小等于正方形宽度（或高度）的一半*/

}

矩形

.rectangle{

width: 200px;

height: 100px;

background: #FF00D4;

}

菱形

注：菱形的绘制有几种不同的方法，比如通过绘制两个三角形定位叠加在一起形成菱形，最简单的是先绘制正方形，然后旋转45度变成菱形。

.diamond{

width: 100px;

height: 100px;

background: #FF00D4;

transform: rotate(45deg);

transform-origin: 0 100%; /*两个值分别表示水平X、垂直Y方向的值，默认的中心点是center（50%） 此时表示旋转点在左下角*/

}

平行四边形

注：绘制平行四边形通常是矩形斜切一定的角度形成的，但是，若此时矩形里面有内容文字，斜切后里面的内容文字也会倾斜一定的角度。解决的办法是:是通过伪元素的方法，把所有的样式用到伪元素上，对伪元素进行变形，由于内容不在伪元素里，所以内容不会受到影响。

.parallelogram{

position: relative;

width: 200px;

height: 100px;

margin-top: 50px;

text-align: center;

line-height: 100px;

font-size: 22px;

}

.parallelogram:after{

content:'';

position: absolute;

left: 0;

right: 0;

top: 0;

bottom: 0;

z-index: -1;

background: #FF00D4;

transform: skew(35deg);

-moz-transform: skew(35deg);

-webkit-transform: skew(35deg);

}

梯形

.tixing1{

border-left: 50px solid transparent;

border-right: 50px solid transparent;

border-bottom: 100px solid #FF00D4;

width: 100px;

height: 0;

}

.tixing2{

border-top: 50px solid transparent;

border-bottom: 50px solid transparent;

border-right: 100px solid #FF00D4;

height: 100px;

width: 0;

}

/* 直角梯形 */

.tixing3{

border-top: 100px solid #FF00D4;

border-left: 100px solid transparent;

border-right: 100px solid #FF00D4;

width: 0;

height: 0;

}

梯形的绘制原理方法一：

梯形还可以有另外一种实现方式：

三角形（）

.triangle1{

width: 0;

height: 0;

border:50px solid #FF00D4;

border-color: #FF00D4 transparent transparent; /*上、左右、下*/

/* border-top: 50px solid #FF00D4;

border-left:50px solid transparent;

border-right: 50px solid transparent;

border-bottom: 50px solid transparent;*/

}

.triangle2{

width: 0;

height: 0;

border: 50px solid #FF00D4;

border-color: transparent #FF00D4 transparent transparent;/*上、右、下、左 */

}

.triangle3{

width: 0;

height: 0;

border-bottom: 100px solid #FF00D4;

border-left: 20px solid transparent;

border-right: 20px solid transparent;

}

/* 左上等腰直角 */

.triangle4{

border-top: 100px solid #FF00D4;

border-right: 100px solid transparent;

/* 或 border-left: 100px solid #FF00D4;

border-bottom: 100px solid transparent; */

width: 0;

}

/* 右下等腰直角 */

.triangle5{

width: 0;

border-right: 100px solid #FF00D4;

border-top: 100px solid transparent;

}

.triangle6{

width: 0;

border-top: 100px solid #FF00D4;

border-right: 50px solid transparent;

}

.triangle7{

width: 0;

border-bottom: 100px solid #FF00D4;

border-right: 50px solid transparent;

}

/* 钝角 */

.triangle9{

width: 0;

height: 0;

border-top: 50px solid #FF00D4;

border-left: 70px solid transparent;

border-right: 70px solid transparent;

transform: rotate(35deg);

}

六角星

原理：通过两个三角形定位叠加在一起组合成六角星

.liujiaoxing{

width: 0;

height: 0;

border-top: 100px solid #FF00D4;

border-left: 50px solid transparent;

border-right: 50px solid transparent;

position: relative;

}

.liujiaoxing:after{

content: "";

position: absolute;

left:-50px;

top: -130px;

width: 0;

height: 0;

border-bottom: 100px solid #FF00D4;

border-left: 50px solid transparent;

border-right: 50px solid transparent;

}

五角星

.wujiaoxing{

border-bottom: 70px solid #FF00D4;

border-left: 100px solid transparent;

border-right: 100px solid transparent;

width: 0;

height: 0;

transform: rotate(-35deg);

position: relative;

}

.wujiaoxing:after{

content: "";

position: absolute;

left: -100px;

top: 0;

border-bottom: 70px solid #FF00D4;

border-left: 100px solid transparent;

border-right: 100px solid transparent;

width: 0;

height: 0;

transform: rotate(70deg);

}

.wujiaoxing:before{

content: "";

position: absolute;

left: 6px;

top: -40px;

border-bottom: 60px solid #FF00D4;

border-left: 26px solid transparent;

border-right: 26px solid transparent;

width: 0;

height: 0;

transform: rotate(35deg);

}

实现原理：绘制五角星主要是运用三个不同的三角形，通过定位旋转叠加在一起实现的。

实心圆

.shixinyuan{

width: 100px;

height: 100px;

background: #FF00D4;

border-radius: 50px;

/* border-radius: 50%; */

}

圆环（同心圆）

.yuanhuan{

width: 160px;

height: 160px;

background: #FF00D4;

border-radius: 50%;

position: relative;

z-index: 333;

}

.yuanhuan:after{

content: "";

position: absolute;

left: 20px;

top: 20px;

width: 120px;

height: 120px;

background: #fff;

border-radius: 50%;

z-index: -1;

}

上半圆

.shangbanyuan{

width: 100px;

height: 50px;

background: #FF00D4;

border-radius: 50px 50px 0 0;

}

右半圆

.youbanyuan{

width: 50px;

height: 100px;

background: #FF00D4;

border-radius: 0 50px 50px 0;

}

四分之一半圆

.one-four-banyuan{

width: 50px;

height: 50px;

background: #FF00D4;

border-radius: 0 0 50px 0;

}

椭圆-水平方向

.tuoyuan-horizontal{

width: 200px;

height: 100px;

background: #FF00D4;

border-radius: 100px/50px; /* 水平/垂直 */

}

椭圆-垂直方向

.tuoyuan-vertical{

width: 100px;

height: 200px;

background: #FF00D4;

border-radius: 50px/100px; /* 水平/垂直 */

}

胶囊-水平方向

.jiaonuan-horizontal{

width: 200px;

height: 100px;

background: #FF00D4;

border-radius: 50px; /* 值必须大于或等于高度的一半*/

}

胶囊-垂直方向

.jiaonuan-vertical{

width: 100px;

height: 200px;

background: #FF00D4;

border-radius: 50px; /* 值必须大于或等于宽度的一半*/

}

半个胶囊

.bange-jiaonuan{

width: 100px;

height: 200px;

background: #FF00D4;

border-radius: 50px 50px 0 0;

}

饼状图

.binzhuangtu{

width: 0;

height: 0;

border:50px solid #FF00D4;

border-radius: 50%;

border-left-color: #3C00FF;

}

鸡蛋

.jidan{

width: 120px;

height: 164px;

background: #FF00D4;

border-radius: 60px 60px 60px 60px/100px 100px 64px 64px;

}

欧朋浏览器图标

.opera-logo{

width: 258px;

height: 278px;

background: #FF00D4;

border-radius: 100%;

position: relative;

}

.opera-logo:before{

content: "";

position: absolute;

left: 66px;

top: 22px;

width: 122px;

height: 230px;

background: #fff;

border-radius: 100%;

}

心形

.xinxing{

width: 100px;

height: 100px;

background: #FF00D4;

position: relative;

transform: rotate(45deg);

}

.xinxing::before{

content: "";

position: absolute;

left: -50px;

top: 0;

width: 50px;

height: 100px;

background: #FF00D4;

border-radius: 50px 0 0 50px;

}

.xinxing::after{

content:"";

position: absolute;

left: 0px;

top: -50px;

width: 100px;

height: 50px;

background: #FF00D4;

border-radius: 50px 50px 0 0;

}

心形的绘制原理：首先绘制一个正方形，然后利用伪元素和定位绘制两个半圆，旋转一定的角度形成

五边形

.wubianxing{

border-top: 50px solid #FF00D4;

border-left: 25px solid transparent;

border-right: 25px solid transparent;

width: 50px;

position: relative;

}

.wubianxing:before{

content: "";

position: absolute;

left: -25px;

top: -90px;

width: 0;

border-bottom: 40px solid #FF00D4;

border-left: 50px solid transparent;

border-right: 50px solid transparent;

}

原理：五边形可以由一个梯形和一个三角形组成

六边形

.liubianxing{

width: 100px;

height: 50px;

background: #FF00D4;

position: relative;

}

.liubianxing:before{

content: "";

position: absolute;

left: 0;

top: -40px;

border-bottom: 40px solid #FF00D4;

border-left: 50px solid transparent;

border-right: 50px solid transparent;

width: 0;

}

.liubianxing:after{

content: "";

position: absolute;

left: 0;

top: 50px;

border-top: 40px solid #FF00D4;

border-left: 50px solid transparent;

border-right: 50px solid transparent;

width: 0;

}

钻石型

.zuanshixing{

border-bottom: 40px solid #FF00D4;

border-left: 30px solid transparent;

border-right: 30px solid transparent;

width: 60px;

position: relative;

}

.zuanshixing:after{

content: "";

position: absolute;

left: -30px;

top: 40px;

border-top: 80px solid #FF00D4;

border-left: 60px solid transparent;

border-right: 60px solid transparent;

}

气泡对话框

.qibaoduihuakuang{

width: 300px;

height: 180px;

background: #FF00D4;

border-radius: 50%;

position: relative;

}

.qibaoduihuakuang:before{

content: "";

width: 0;

height: 0;

border:24px solid #FF00D4;

border-radius: 50%;

position: absolute;

left: -50px;

bottom: 0px;

}

.qibaoduihuakuang::after{

content: "";

width: 0;

height: 0;

border:12px solid #FF00D4;

border-radius: 50%;

position: absolute;

left: -90px;

bottom: -25px;

}

边框对话框

.biankuangduihuakuang{

width: 280px;

height: 120px;

border: 2px solid #ddd;

position: relative;

}

.biankuangduihuakuang:after{

content: "";

position: absolute;

left: 80px;

bottom: -36px;

width: 0;

border-top: 35px solid #ddd;

border-left: 25px solid transparent;

border-right: 25px solid transparent;

}

.biankuangduihuakuang:before{

content: "";

content: "";

position: absolute;

left: 80px;

bottom: -34px;

width: 0;

border-top: 35px solid #fff;

border-left: 25px solid transparent;

border-right: 25px solid transparent;

z-index: 999;

}

原理：原理：做两个小三角，一个是背景色，一个是边框色，然后利用定位重叠在一起， 记住他们的定位一定要相差一个像素.注：另一种方法是利用CSS3 transfrom旋转45度实现三角形。先创建一个带border的div，设置背景色和相邻的两个边框的颜色， 然后旋转45度，但是利用ie的matrix filter实现CSS3 transform的兼容方案很大。

月亮

.yueliang{

width: 100px;

height: 100px;

background: #FF00D4;

border-radius: 50%;

position: relative;

}

.yueliang:before{

content: "";

position: absolute;

left: -30px;

top: -15px;

width: 100px;

height: 100px;

background: #fff;

border-radius: 50%;

}

原理：由两个圆通过定位叠加形成。

放大镜

.magnifying-glass{

width: 40px;

height: 40px;

border: 10px solid #FF00D4;

border-radius: 50%;

position: relative;

}

.magnifying-glass:after{

content: "";

position: absolute;

left: 55px;

top: 23px;

width: 10px;

height: 50px;

background: #FF00D4;

transform: rotate(-55deg);

}

原理：一个圆和一个倾斜的矩形组合形成

徽章丝带

#badge-ribbon {

position: relative;

background: #FF00D4;

height: 100px;

width: 100px;

border-radius: 50px;

}

#badge-ribbon:after,#badge-ribbon:before{

content: "";

position: absolute;

left: 55px;

top: 72px;

border-bottom: 65px solid #FF00D4;

border-left: 25px solid transparent;

border-right: 25px solid transparent;

transform: rotate(145deg);

}

#badge-ribbon:before{

transform: rotate(-145deg);

border-bottom: 65px solid #FF00D4;

left: -5px;

}

原理：如下图所示

无限符图形

#infinity {

position: relative;

width: 212px;

height: 100px;

}

#infinity:before,#infinity:after{

position: absolute;

left: 0;

top: 0;

content: "";

width: 60px;

height: 60px;

border: 20px solid #FF00D4;

border-radius: 60px 60px 0 60px;

transform: rotate(-45deg)

}

#infinity:after{

transform: rotate(135deg);

right: 0;

left: auto;

}

太极八卦

#yin-yang {

width: 96px;

height: 48px;

background: #eee;

border-color: #FF00D4;

border-style: solid;

border-width: 2px 2px 50px 2px;

border-radius: 100%;

position: relative;

}

#yin-yang:before {

content: "";

position: absolute;

top: 50%;

left: 0;

background: #eee;

border: 18px solid #FF00D4;

border-radius: 100%;

width: 12px;

height: 12px;

}

#yin-yang:after {

content: "";

position: absolute;

top: 50%;

left: 50%;

background: #FF00D4;

border: 18px solid #eee;

border-radius:100%;

width: 12px;

height: 12px;

}