CSS图形每日一练（下）

1. 心形（Heart）

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

heart.png

2. 无穷（Infinity）

#infinity {
  position: relative;
  width: 212px;
  height: 100px;
  box-sizing: content-box;
}
#infinity::before,
#infinity::after {
  position: absolute;
  content: '';
  box-sizing: content-box;
  top: 0;
  left: 0;
  width: 60px;
  height: 60px;
  border: 20px solid red;
  border-radius: 50px 50px 0 50px;
  transform: rotate(-45deg);
}
#infinity::after {
  left: auto;
  right: 0;
  border-radius: 50px 50px 50px 0;
  transform: rotate(45deg);
}

infinity.png

3. 鸡蛋形（Egg）

#egg {
  display: block;
  width: 126px;
  height: 180px;
  background: red;
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
}

egg.png

4. 吃豆人（Pac-Man）

#pacman {
  width: 0;
  height: 0;
  border: 60px solid red;
  border-right-color: transparent;
  border-radius: 60px;
}

pacman.png

5. 聊天框（Talk Bubble）

#talkbubble {
  width: 120px;
  height: 80px;
  background: red;
  border-radius: 10px;
  position: relative;
  margin: 0 20px;
}
#talkbubble::before {
  position: absolute;
  content: '';
  top: 26px;
  right: 100%;
  width: 0;
  height: 0;
  border-top: 13px solid transparent;
  border-right: 17px solid red;
  border-bottom: 13px solid transparent;
}

talkbubble.png

6. 六角星（Star (6-points)）

#star-six {
  width: 0;
  height: 0;
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
  border-bottom: 100px solid red;
  position: relative;
}
#star-six::after {
  width: 0;
  height: 0;
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
  border-top: 100px solid red;
  position: absolute;
  content: '';
  top: 30px;
  left: -50px;
}

star-six.png

7. 五角星（Star(5-points)）

#star-five {
  width: 0;
  height: 0;
  border-left: 100px solid transparent;
  border-right: 100px solid transparent;
  border-bottom: 70px solid red;
  position: relative;
  transform: rotate(35deg);
  margin: 60px 0;
}
#star-five::before {
  width: 0;
  height: 0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  border-bottom: 80px solid red;
  position: absolute;
  content: '';
  top: -45px;
  left: -65px;
  transform: rotate(-35deg);
}
#star-five::after {
  width: 0;
  height: 0;
  border-left: 100px solid transparent;
  border-right: 100px solid transparent;
  border-bottom: 70px solid red;
  position: absolute;
  content: '';
  top: 3px;
  left: -105px;
  transform: rotate(-70deg);
}

star-five.png

8. 爆炸形状1（12 Point Burst）

#burst-12 {
  width: 80px;
  height: 80px;
  background: red;
  position: relative;
}
#burst-12::before,
#burst-12::after {
  position: absolute;
  content: '';
  top: 0;
  left: 0;
  width: 80px;
  height: 80px;
  background: red;
}
#burst-12::before {
  transform: rotate(30deg);
}
#burst-12::after {
  transform: rotate(60deg);
}

burst-12.png

9. 爆炸形状2（8 Point Burst）

#burst-8 {
  width: 80px;
  height: 80px;
  background: red;
  position: relative;
  transform: rotate(20deg);
}
#burst-8::before {
  width: 80px;
  height: 80px;
  background: red;
  position: absolute;
  content: '';
  top: 0;
  left: 0;
  transform: rotate(135deg);
}

burst-8.png

10. 阴阳（Yin Yang）

#yin-yang {
  width: 100px;
  height: 100px;
  background: linear-gradient(to bottom, #000 0%,#000 50%,#fff 50%,#fff 100%);
  border-radius: 50%;
  border: 1px solid black;
  position: relative;
}
#yin-yang::before {
  position: absolute;
  content: '';
  top: 25px;
  left: 0;
  width: 10px;
  height: 10px;
  background: white;
  border-radius: 50%;
  border: 20px solid black;
  box-sizing: content-box;
}
#yin-yang::after {
  position: absolute;
  content: '';
  top: 25px;
  left: 50px;
  width: 10px;
  height: 10px;
  background: black;
  border: 20px solid white;
  border-radius: 50%;
  box-sizing: content-box;
}

yinyang.png

11. 徽章丝带（Badge Ribbon）

#badge-ribbon {
  width: 100px;
  height: 100px;
  background: red;
  border-radius: 50px;
  position: relative;
}
#badge-ribbon::before,
#badge-ribbon::after {
  position: absolute;
  content: '';
  top: 70px;
  left: -10px;
  border-left: 40px solid transparent;
  border-right: 40px solid transparent;
  border-bottom: 70px solid red;
  transform: rotate(-140deg);
}
#badge-ribbon::after {
  left: auto;
  right: -10px;
  transform: rotate(140deg);
}

badge-ribbon.png

12. 电视屏幕（TV Screen）

#tv {
  width: 200px;
  height: 150px;
  position: relative;
  background: red;
  border-radius: 50% / 11%;
  margin: 10px;
}
#tv::before {
  position: absolute;
  content: '';
  top: 10%;
  bottom: 10%;
  left: -5%;
  right: -5%;
  background: inherit;
  border-radius: 5% / 50%;
}

tv.png

13. Chevron

#chevron {
  position: relative;
  height: 60px;
  width: 200px;
  padding: 12px;
  margin-bottom: 6px;
  box-sizing: border-box;
} 
#chevron::before {
  position: absolute;
  content: '';
  top: 0;
  left: 0;
  height: 100%;
  width: 51%;
  background: red;
  transform: skew(0,6deg);
}
#chevron::after {
  position: absolute;
  content: '';
  top: 0;
  right: 0;
  height: 100%;
  width: 50%;
  background: red;
  transform: skew(0,-6deg);
}

chevron.png

14. 放大镜（Magnifying Glass）

#magnifying-glass {
  width: 0.4em;
  height: 0.4em;
  position: relative;
  font-size: 10em;
  border: 0.1em solid red;
  border-radius: 0.35em;
}
#magnifying-glass::before {
  position: absolute;
  content: '';
  right: -0.25em;
  bottom: -0.1em;
  width: 0.35em;
  height: 0.08em;
  background: red;
  transform: rotate(45deg);
}

magnifying-glass.png

15. 脸书图标（Facebook Icon）

#facebook-icon {
  background: red;
  width: 100px;
  height: 110px;
  border: 15px solid red;
  border-radius: 5px;
  overflow: hidden;
  position: relative;
  border-bottom: 0;
  box-sizing: content-box;
}
#facebook-icon::before {
  position: absolute;
  content: '';
  bottom: -30px;
  right: -37px;
  width: 40px;
  height: 90px;
  border: 20px solid #eee;
  border-radius: 25px;
  background: red;
  box-sizing: content-box;
}
#facebook-icon::after {
  position: absolute;
  content: '';
  top: 50px;
  right: 5px;
  width: 55px;
  height: 20px;
  background: #eee;
  box-sizing: content-box;
}

facebook-icon.png

16. 月亮（Moon）

#moon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  box-shadow: 15px 15px 0 0 red;
}

moon.png

17. 旗帜（Flag）

#flag {
  width: 110px;
  height: 56px;
  background: red;
  padding-top: 15px;
  box-sizing: content-box;
  position: relative;
}
#flag::after {
  position: absolute;
  content: '';
  left: 0;
  bottom: 0;
  width: 0;
  height: 0;
  border-bottom: 13px solid #eeeeee;
  border-left: 55px solid transparent;
  border-right: 55px solid transparent;
}

flag.png

18. 圆锥形（Cone）

#cone {
  width: 0;
  height: 0;
  border-left: 70px solid transparent;
  border-right: 70px solid transparent;
  border-top: 100px solid red;
  border-radius: 50%;
}

cone.png

19. 十字（Cross）

#cross {
  width: 20px;
  height: 100px;
  background: red;
  position: relative;
  margin: 0 40px;
}
#cross::after {
  position: absolute;
  content: '';
  top: 40px;
  left: -40px;
  width: 100px;
  height: 20px;
  background: red;
}

cross.png

20. Base

#base {
  width: 100px;
  height: 55px;
  background: red;
  position: relative;
  margin-left: 20px;
  margin-top: 55px;
  display: inline-block;
}
#base::before {
  position: absolute;
  content: '';
  top: -35px;
  left: 0;
  width: 0;
  height: 0;
  border-bottom: 35px solid red;
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
}

base.png

参考链接

Chris Coyier, The Shapes of CSS