简单写一下常见的基础图形，以及一些遇到的样式小图标 下图是css效果⬇：

各个图形的代码如下：

Square(正方形)

.square { width: 60px; height: 60px; background: red; }

Circle(圆形)

.circle { width: 60px; height: 60px; background: red; -moz-border-radius: 30px; -webkit-border-radius: 30px; border-radius: 30px; }

Triangle Up(正三角形)

.triangle-up { width: 0; border: 30px solid red; border-left: 30px solid rgba(0, 0, 0, 0); border-right: 30px solid rgba(0, 0, 0, 0); border-top: 30px solid rgba(0, 0, 0, 0); }

Triangle Down(倒三角形)

.triangle-down { width: 0; border: 30px solid red; border-left: 30px solid rgba(0, 0, 0, 0); border-right: 30px solid rgba(0, 0, 0, 0); border-bottom: 30px solid rgba(0, 0, 0, 0); }

Trapezoid(梯形)

.trapezoid { border-bottom: 60px solid red; border-left: 30px solid transparent; border-right: 30px solid transparent; height: 0; width: 60px; }

Parallelogram(平行四边形)

.parallelogram { width: 100px; height: 60px; -webkit-transform: skew(20deg); -moz-transform: skew(20deg); -o-transform: skew(20deg); background: red; }

Pentagon(五边形)

.pentagon { margin-top: 30px; position: relative; width: 54px; border-width: 50px 18px 0; border-style: solid; border-color: red transparent; } .pentagon:before { content: ""; position: absolute; height: 0; width: 0; top: -85px; left: -18px; border-width: 0 45px 35px; border-style: solid; border-color: transparent transparent red; }

Heart(心形)

.heart { position: relative; width: 100px; height: 90px; } .heart:before, .heart:after { position: absolute; content: ""; left: 50px; top: 0; width: 50px; height: 80px; background: red; -moz-border-radius: 50px 50px 0 0; border-radius: 50px 50px 0 0; -webkit-transform: rotate(-45deg); -moz-transform: rotate(-45deg); -ms-transform: rotate(-45deg); -o-transform: rotate(-45deg); transform: rotate(-45deg); -webkit-transform-origin: 0 100%; -moz-transform-origin: 0 100%; -ms-transform-origin: 0 100%; -o-transform-origin: 0 100%; transform-origin: 0 100%; } .heart:after { left: 0; -webkit-transform: rotate(45deg); -moz-transform: rotate(45deg); -ms-transform: rotate(45deg); -o-transform: rotate(45deg); transform: rotate(45deg); -webkit-transform-origin: 100% 100%; -moz-transform-origin: 100% 100%; -ms-transform-origin: 100% 100%; -o-transform-origin: 100% 100%; transform-origin: 100% 100%; }

Diamond Square(菱形)

.diamond { width: 0; height: 0; border: 50px solid transparent; border-bottom-color: red; position: relative; top: -50px; } .diamond:after { content: ''; position: absolute; left: -50px; top: 50px; width: 0; height: 0; border: 50px solid transparent; border-top-color: red; }

Star (5-points)(五角星)

.star-five { margin: 50px 0; position: relative; display: block; color: red; width: 0; height: 0; border-right: 100px solid transparent; border-bottom: 70px solid red; border-left: 100px solid transparent; -moz-transform: rotate(35deg); -webkit-transform: rotate(35deg); -ms-transform: rotate(35deg); -o-transform: rotate(35deg); } .star-five:before { border-bottom: 80px solid red; border-left: 30px solid transparent; border-right: 30px solid transparent; position: absolute; height: 0; width: 0; top: -45px; left: -65px; display: block; content: ''; -webkit-transform: rotate(-35deg); -moz-transform: rotate(-35deg); -ms-transform: rotate(-35deg); -o-transform: rotate(-35deg); } .star-five:after { position: absolute; display: block; color: red; top: 3px; left: -105px; width: 0; height: 0; border-right: 100px solid transparent; border-bottom: 70px solid red; border-left: 100px solid transparent; -webkit-transform: rotate(-70deg); -moz-transform: rotate(-70deg); -ms-transform: rotate(-70deg); -o-transform: rotate(-70deg); content: ''; }

Moon(月亮)

.moon { width: 80px; height: 80px; margin: 0 30px 20px 0; border-radius: 50%; box-shadow: 15px 15px 0 0 red; }

Cut Diamond(钻石形)

.cut-diamond { border-style: solid; border-color: transparent transparent red transparent; border-width: 0 25px 25px 25px; height: 0; width: 50px; position: relative; margin: 20px 0 50px 0; } .cut-diamond:after { content: ""; position: absolute; top: 25px; left: -25px; width: 0; height: 0; border-style: solid; border-color: red transparent transparent transparent; border-width: 70px 50px 0 50px; }

Egg(鸡蛋)

.egg { display: block; width: 126px; height: 180px; background-color: red; -webkit-border-radius: 63px 63px 63px 63px / 108px 108px 72px 72px; border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%; }

Yin Yang(太极阴阳图形)

.yin-yang { width: 96px; height: 48px; background: #eee; border-color: #000; 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 #000; border-radius: 100%; width: 12px; height: 12px; } .yin-yang:after { content: ""; position: absolute; top: 50%; left: 50%; background: #000; border: 18px solid #eee; border-radius: 100%; width: 12px; height: 12px; }

Talk Bubble（聊天框）

.talkbubble { width: 120px; height: 80px; margin-left: 20px; background: red; position: relative; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px; }

Magnifying Glass（放大镜）

.magnifying-glass { font-size: 10em; display: inline-block; width: 0.4em; height: 0.4em; border: 0.1em solid red; position: relative; border-radius: 0.35em; } .magnifying-glass::before { content: ""; display: inline-block; position: absolute; right: -0.25em; bottom: -0.1em; border-width: 0; background: red; width: 0.35em; height: 0.08em; -webkit-transform: rotate(45deg); -moz-transform: rotate(45deg); -ms-transform: rotate(45deg); -o-transform: rotate(45deg); }

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