虽然我们现在大都使用字体图标或者svg图片，似乎使用 CSS 来做图标意义不是很大，但怎么实现这些图标用到的一些技巧及思路是很值得我们的学习。
一、实心圆
.circle {width: 120px;height: 120px;background: #8BC34A;border-radius: 100%;}
二、圆环（空心圆）
.ring {width: 100px;height: 100px;border: 10px solid #8BC34A;border-radius: 100%;}
三、椭圆
.ellipsis {width: 200px;height: 120px;background: #8BC34A;border-radius: 100px/60px;}web前端开发学习Q-q-u-n： 731771211，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习方法（详细的前端项目实战教学视频，PDF）
四、半圆
.top-semicircle {width: 120px;height: 60px;background: #8BC34A;border-radius: 60px 60px 0px 0px;}.right-semicircle {width: 60px;height: 120px;background: #8BC34A;border-radius: 0 60px 60px 0;}.bottom-semicircle {width: 120px;height: 60px;background: #8BC34A;border-radius: 0 0 60px 60px;}.left-semicircle {width: 60px;height: 120px;background: #8BC34A;border-radius: 60px 0 0 60px;}
五、四分之一圆（扇形）
.toplf-sector,.toprt-sector,.bottomlf-sector,.bottomrt-sector {width: 60px;height: 60px;background: #8BC34A;}.toplf-sector {border-radius: 60px 0 0 0;}.toprt-sector {border-radius: 0 60px 0 0;}.bottomlf-sector {border-radius: 0 0 0 60px;}.bottomrt-sector {border-radius: 0 0 60px 0;}
六、心形
.heart-shaped {width: 80px;height: 80px;background: #8BC34A;position: relative;transform: rotate(45deg);}.heart-shaped::before {content: "";width: 40px;height: 80px;background: #8BC34A;border-radius: 40px 0 0 40px;position: absolute;right: 99%;top: 0;}.heart-shaped::after {content: "";width: 80px;height: 40px;background: #8BC34A;border-radius: 40px 40px 0 0;position: absolute;left: 0;bottom: 99%;}web前端开发学习Q-q-u-n： 731771211，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习方法（详细的前端项目实战教学视频，PDF）
七、鸡蛋
.egg {width: 150px;height: 200px;background: #8BC34A;border-radius: 75px 75px 75px 75px / 130px 130px 70px 70px;}
八、太极八卦阵图
.taiji {width: 140px;height: 70px;border: 2px solid #8BC34A;border-bottom: 70px solid #8BC34A;border-radius: 100%;position: relative;}.taiji::before {content: "";position: absolute;left: 0;top: 50%;width: 20px;height: 20px;background: #fff;border: 25px solid #8BC34A;border-radius: 100%;}.taiji::after {content: "";position: absolute;right: 0;top: 50%;width: 20px;height: 20px;background: #8BC34A;border: 25px solid #fff;border-radius: 100%;}
九、叶子（花瓣）
.leaf1 {width: 80px;height: 80px;background: #8BC34A;border-radius: 0 80px;}
.leaf2 {width: 80px;height: 80px;background: #8BC34A;border-radius: 40px 40px 0 40px;}
十、五叶花瓣
.five-flower {position: relative;width: 300px;height: 280px;}.five-flower .petal {display: block;width: 120px;height: 120px;background: #8BC34A;border-radius: 0 120px;position: absolute;transform-origin: 100% 100%;}.five-flower .petal1 {transform: rotate(72deg);}.five-flower .petal2 {transform: rotate(144deg);}.five-flower .petal3 {transform: rotate(216deg);}.five-flower .petal4 {transform: rotate(288deg);}web前端开发学习Q-q-u-n： 731771211，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习方法（详细的前端项目实战教学视频，PDF）
十一、牵牛花
.qiannuhua {position: relative;width: 200px;height: 200px;margin-left: 140px;}.qiannuhua .petal {display: block;width: 120px;height: 120px;background: #8BC34A;border-radius: 0 120px;position: absolute;transform-origin: 0% 100%}.qiannuhua .petal1 {transform: rotate(72deg);}.qiannuhua .petal2 {transform: rotate(144deg);}.qiannuhua .petal3 {transform: rotate(216deg);}.qiannuhua .petal4 {transform: rotate(288deg);}
十二、风车
.fengche {position: relative;width: 200px;height: 200px;}.fengche .petal {display: block;width: 120px;height: 120px;background: #8BC34A;border-radius: 0 120px;position: absolute;transform-origin: 30% 100%}.fengche .petal1 {transform: rotate(72deg);}.fengche .petal2 {transform: rotate(144deg);}.fengche .petal3 {transform: rotate(216deg);}.fengche .petal4 {transform: rotate(288deg);}
十三、小尾巴
.xwb1 {width: 20px;height: 30px;border-left: 8px solid #8BC34A;border-radius: 30px 0 0 0;}
十四、箭头
.xwb2 {width: 0;height: 0;border-bottom: 10px solid #8BC34A;border-left: 10px solid transparent;position: relative;transform: rotate(8deg);}.xwb2::after {content: "";width: 20px;height: 18px;border-right: 5px solid #8BC34A;border-radius: 0px 40px 0 0;position: absolute;left: -30px;bottom: -15px;transform: rotate(-45deg);}web前端开发学习Q-q-u-n： 731771211，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习方法（详细的前端项目实战教学视频，PDF）
十五、月亮
.moon {width: 80px;height: 120px;border-left: 40px solid #8BC34A;border-radius: 60px;}
十六、三角形
.triangle-bot {width: 0;height: 0;border: 40px solid transparent;border-bottom-color: #8BC34A;}.triangle-top {width: 0;height: 0;border: 40px solid transparent;border-top-color: #8BC34A;}.triangle-lf {width: 0;height: 0;border: 40px solid transparent;border-left-color: #8BC34A;}.triangle-rt {width: 0;height: 0;border: 40px solid transparent;border-right-color: #8BC34A;}
.triangle-toplf,.triangle-toprt,.triangle-bottomlf,.triangle-bottomrt {width: 0;height: 0;}.triangle-toplf {border-top: 120px solid #8BC34A;border-right: 120px solid transparent;}.triangle-toprt {border-top: 120px solid #8BC34A;border-left: 120px solid transparent;}.triangle-bottomlf {border-bottom: 120px solid #8BC34A;border-right: 120px solid transparent;}.triangle-bottomrt {border-bottom: 120px solid #8BC34A;border-left: 120px solid transparent;}
.triangle1 {border-bottom: 120px solid #8BC34A;border-right: 60px solid transparent;}.triangle2 {border-top: 120px solid #8BC34A;border-left: 60px solid transparent;}.triangle3 {border-top: 60px solid #8BC34A;border-right: 120px solid transparent;}.triangle4 {border-top: 60px solid #8BC34A;border-left: 120px solid transparent;}
.triangle5 {border-top: 80px solid #8BC34A;border-left: 40px solid transparent;border-right: 40px solid transparent;}
十七、梯形
.tixing1 {border-bottom: 100px solid #8BC34A;border-left: 60px solid transparent;border-right: 60px solid transparent;width: 100px;height: 0;}
.tixing2 {border-bottom: 120px solid #8BC34A;border-right: 120px solid transparent;width: 80px;}web前端开发学习Q-q-u-n： 731771211，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习方法（详细的前端项目实战教学视频，PDF）
十八、边框对话框
.duihuakuang {width: 200px;height: 100px;border: 2px solid #8BC34A;border-radius: 6px;position: relative;}.duihuakuang::before {content: "";width: 20px;height: 20px;background: #fff;border-right: 2px solid #8BC34A;border-bottom: 2px solid #8BC34A;position: absolute;left: 30%;top: 100%;transform: rotate(45deg);margin-top: -10px;}
十九、锁
.suo {width: 200px;height: 160px;background: #8BC34A;border-radius: 30px;position: relative;}/*锁孔*/.suo::before {content: "";width: 25px;height: 50px;background: #fff;position: absolute;left: 50%;top: 50%;border-radius: 25px;transform: translate(-50%, -50%);}/*锁把*/.suo::after {content: "";width: 80px;height: 70px;border: 20px solid #8BC34A;background: #fff;border-radius: 60px 60px 0 0;position: absolute;left: 50%;bottom: 89%;transform: translateX(-50%);}
二十、立体球型
.qiu1 {width: 120px;height: 120px;background: #8BC34A;background-image: radial-gradient(at 20% 30%, #e5ffc7, #75af33, #375f0a);border-radius: 100%;}
二十一、圆柱
<div class="cylinder fl"><div class="ellipse"></div><div class="rectangle"></div></div>
.cylinder {position: relative;transform: rotateX(70deg);}.ellipse {width: 100px;height: 100px;background: deepskyblue;border-radius: 50px;}.rectangle {width: 100px;height: 400px;position: absolute;opacity: 0.6;background: deepskyblue;top: 0;left: 0;border-radius: 50px;z-index: -1;}web前端开发学习Q-q-u-n： 731771211，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习方法（详细的前端项目实战教学视频，PDF）
更多形状图形持续更新，欢迎大家讨论提出问题
