CSS 各种形状
CSS能夠制作各種形狀。
正方形和矩形很容易，因為它們是網的自然形狀。
添加寬度和高度，您就可以獲得所需的確切尺寸矩形。
添加border-radius，你可以對該形狀進行舍入，并且可以將這些矩形變成圓形和橢圓形。
我們還在CSS中獲得了::before和::after psuedo元素，這使我們可以添加兩個可以添加到原始元素的形狀。
通過定位，轉換和許多其他技巧變得聰明，我們可以在CSS中使用單個HTML元素制作許多形狀。
Square
#square {width: 100px;height: 100px;background: red; }Rectangle
#rectangle {width: 200px;height: 100px;background: red; }Circle
#circle {width: 100px;height: 100px;background: red;border-radius: 50% }Oval
#oval {width: 200px;height: 100px;background: red;border-radius: 100px / 50px; }Triangle Up
#triangle-up {width: 0;height: 0;border-left: 50px solid transparent;border-right: 50px solid transparent;border-bottom: 100px solid red; }Triangle Down
#triangle-down {width: 0;height: 0;border-left: 50px solid transparent;border-right: 50px solid transparent;border-top: 100px solid red }Triangle Left
#triangle-left {width: 0;height: 0;border-top: 50px solid transparent;border-right: 100px solid red;border-bottom: 50px solid transparent; }Triangle Right
#triangle-right {width: 0;height: 0;border-top: 50px solid transparent;border-left: 100px solid red;border-bottom: 50px solid transparent; }Triangle Top Left
#triangle-topleft {width: 0;height: 0;border-top: 100px solid red;border-right: 100px solid transparent; }Triangle Top Right
#triangle-topright {width: 0;height: 0;border-top: 100px solid red;border-left: 100px solid transparent; }Triangle Bottom Left
#triangle-bottomleft {width: 0;height: 0;border-bottom: 100px solid red;border-right: 100px solid transparent; }Triangle Bottom Right
#triangle-bottomright {width: 0;height: 0;border-bottom: 100px solid red;border-left: 100px solid transparent; }Trapezoid
#trapezoid {border-bottom: 100px solid red;border-left: 25px solid transparent;border-right: 25px solid transparent;height: 0;width: 100px; }Parallelogram
#parallelogram {width: 150px;height: 100px;transform: skew(20deg);background: red; }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 (5-points)
#star-five {margin: 50px 0;position: relative;display: block;color: red;width: 0px;height: 0px;border-right: 100px solid transparent;border-bottom: 70px solid red;border-left: 100px solid transparent;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: '';transform: rotate(-35deg); } #star-five:after {position: absolute;display: block;color: red;top: 3px;left: -105px;width: 0px;height: 0px;border-right: 100px solid transparent;border-bottom: 70px solid red;border-left: 100px solid transparent;transform: rotate(-70deg);content: ''; }Pentagon
#pentagon {position: relative;width: 54px;box-sizing: content-box;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; }Hexagon
#hexagon {width: 100px;height: 55px;background: red;position: relative; } #hexagon:before {content: "";position: absolute;top: -25px;left: 0;width: 0;height: 0;border-left: 50px solid transparent;border-right: 50px solid transparent;border-bottom: 25px solid red; } #hexagon:after {content: "";position: absolute;bottom: -25px;left: 0;width: 0;height: 0;border-left: 50px solid transparent;border-right: 50px solid transparent;border-top: 25px solid red; }Octagon
#octagon {width: 100px;height: 100px;background: red;position: relative; } #octagon:before {content: "";width: 100px;height: 0;position: absolute;top: 0;left: 0;border-bottom: 29px solid red;border-left: 29px solid #eee;border-right: 29px solid #eee; } #octagon:after {content: "";width: 100px;height: 0;position: absolute;bottom: 0;left: 0;border-top: 29px solid red;border-left: 29px solid #eee;border-right: 29px solid #eee; }Heart
#heart {position: relative;width: 100px;height: 90px; } #heart:before, #heart:after {position: absolute;content: "";left: 50px;top: 0;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%; }Infinity
#infinity {position: relative;width: 212px;height: 100px;box-sizing: content-box; } #infinity:before, #infinity:after {content: "";box-sizing: content-box;position: absolute;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); }Diamond Square
#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; }Diamond Shield
#diamond-shield {width: 0;height: 0;border: 50px solid transparent;border-bottom: 20px solid red;position: relative;top: -50px; } #diamond-shield:after {content: '';position: absolute;left: -50px;top: 20px;width: 0;height: 0;border: 50px solid transparent;border-top: 70px solid red; }Diamond Narrow
#diamond-narrow {width: 0;height: 0;border: 50px solid transparent;border-bottom: 70px solid red;position: relative;top: -50px; } #diamond-narrow:after {content: '';position: absolute;left: -50px;top: 70px;width: 0;height: 0;border: 50px solid transparent;border-top: 70px solid red; }Cut Diamond
#cut-diamond {border-style: solid;border-color: transparent transparent red transparent;border-width: 0 25px 25px 25px;height: 0;width: 50px;box-sizing: content-box;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
#egg {display: block;width: 126px;height: 180px;background-color: red;border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%; }Pac-Man
#pacman {width: 0px;height: 0px;border-right: 60px solid transparent;border-top: 60px solid red;border-left: 60px solid red;border-bottom: 60px solid red;border-top-left-radius: 60px;border-top-right-radius: 60px;border-bottom-left-radius: 60px;border-bottom-right-radius: 60px; }Talk Bubble
#talkbubble {width: 120px;height: 80px;background: red;position: relative;-moz-border-radius: 10px;-webkit-border-radius: 10px;border-radius: 10px; } #talkbubble:before {content: "";position: absolute;right: 100%;top: 26px;width: 0;height: 0;border-top: 13px solid transparent;border-right: 26px solid red;border-bottom: 13px solid transparent; }12 Point Burst
#burst-12 {background: red;width: 80px;height: 80px;position: relative;text-align: center; } #burst-12:before, #burst-12:after {content: "";position: absolute;top: 0;left: 0;height: 80px;width: 80px;background: red; } #burst-12:before {transform: rotate(30deg); } #burst-12:after {transform: rotate(60deg); }8 Point Burst
#burst-8 {background: red;width: 80px;height: 80px;position: relative;text-align: center;transform: rotate(20deg); } #burst-8:before {content: "";position: absolute;top: 0;left: 0;height: 80px;width: 80px;background: red;transform: rotate(135deg); }Yin Yang
#yin-yang {width: 96px;box-sizing: content-box;height: 48px;background: #eee;border-color: red;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 red;border-radius: 100%;width: 12px;height: 12px;box-sizing: content-box; } #yin-yang:after {content: "";position: absolute;top: 50%;left: 50%;background: red;border: 18px solid #eee;border-radius: 100%;width: 12px;height: 12px;box-sizing: content-box; }Badge Ribbon
#badge-ribbon {position: relative;background: red;height: 100px;width: 100px;border-radius: 50px; } #badge-ribbon:before, #badge-ribbon:after {content: '';position: absolute;border-bottom: 70px solid red;border-left: 40px solid transparent;border-right: 40px solid transparent;top: 70px;left: -10px;transform: rotate(-140deg); } #badge-ribbon:after {left: auto;right: -10px;transform: rotate(140deg); }Space Invader
#space-invader {box-shadow: 0 0 0 1em red,0 1em 0 1em red,-2.5em 1.5em 0 .5em red,2.5em 1.5em 0 .5em red,-3em -3em 0 0 red,3em -3em 0 0 red,-2em -2em 0 0 red,2em -2em 0 0 red,-3em -1em 0 0 red,-2em -1em 0 0 red,2em -1em 0 0 red,3em -1em 0 0 red,-4em 0 0 0 red,-3em 0 0 0 red,3em 0 0 0 red,4em 0 0 0 red,-5em 1em 0 0 red,-4em 1em 0 0 red,4em 1em 0 0 red,5em 1em 0 0 red,-5em 2em 0 0 red,5em 2em 0 0 red,-5em 3em 0 0 red,-3em 3em 0 0 red,3em 3em 0 0 red,5em 3em 0 0 red,-2em 4em 0 0 red,-1em 4em 0 0 red,1em 4em 0 0 red,2em 4em 0 0 red;background: red;width: 1em;height: 1em;overflow: hidden;margin: 50px 0 70px 65px; }TV Screen
#tv {position: relative;width: 200px;height: 150px;margin: 20px 0;background: red;border-radius: 50% / 10%;color: white;text-align: center;text-indent: .1em; } #tv:before {content: '';position: absolute;top: 10%;bottom: 10%;right: -5%;left: -5%;background: inherit;border-radius: 5% / 50%; }Chevron
#chevron {position: relative;text-align: center;padding: 12px;margin-bottom: 6px;height: 60px;width: 200px; } #chevron:before {content: '';position: absolute;top: 0;left: 0;height: 100%;width: 51%;background: red;transform: skew(0deg, 6deg); } #chevron:after {content: '';position: absolute;top: 0;right: 0;height: 100%;width: 50%;background: red;transform: skew(0deg, -6deg); }Magnifying Glass
#magnifying-glass {font-size: 10em;display: inline-block;width: 0.4em;box-sizing: content-box;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;transform: rotate(45deg); }Facebook Icon
#facebook-icon {background: red;text-indent: -999em;width: 100px;height: 110px;box-sizing: content-box;border-radius: 5px;position: relative;overflow: hidden;border: 15px solid red;border-bottom: 0; } #facebook-icon:before {content: "/20";position: absolute;background: red;width: 40px;height: 90px;bottom: -30px;right: -37px;border: 20px solid #eee;border-radius: 25px;box-sizing: content-box; } #facebook-icon:after {content: "/20";position: absolute;width: 55px;top: 50px;height: 20px;background: #eee;right: 5px;box-sizing: content-box; }Moon
#moon {width: 80px;height: 80px;border-radius: 50%;box-shadow: 15px 15px 0 0 red; }Flag
#flag {width: 110px;height: 56px;box-sizing: content-box;padding-top: 15px;position: relative;background: red;color: white;font-size: 11px;letter-spacing: 0.2em;text-align: center;text-transform: uppercase; } #flag:after {content: "";position: absolute;left: 0;bottom: 0;width: 0;height: 0;border-bottom: 13px solid #eee;border-left: 55px solid transparent;border-right: 55px solid transparent; }Cone
#cone {width: 0;height: 0;border-left: 70px solid transparent;border-right: 70px solid transparent;border-top: 100px solid red;border-radius: 50%; }Cross
#cross {background: red;height: 100px;position: relative;width: 20px;}#cross:after {background: red;content: "";height: 20px;left: -40px;position: absolute;top: 40px;width: 100px;}Base
#base {background: red;display: inline-block;height: 55px;margin-left: 20px;margin-top: 55px;position: relative;width: 100px; } #base:before {border-bottom: 35px solid red;border-left: 50px solid transparent;border-right: 50px solid transparent;content: "";height: 0;left: 0;position: absolute;top: -35px;width: 0; }Pointer
#pointer {width: 200px;height: 40px;position: relative;background: red; } #pointer:after {content: "";position: absolute;left: 0;bottom: 0;width: 0;height: 0;border-left: 20px solid white;border-top: 20px solid transparent;border-bottom: 20px solid transparent; } #pointer:before {content: "";position: absolute;right: -20px;bottom: 0;width: 0;height: 0;border-left: 20px solid red;border-top: 20px solid transparent;border-bottom: 20px solid transparent; }Lock
#lock {font-size: 8px;position: relative;width: 18em;height: 13em;border-radius: 2em;top: 10em;box-sizing: border-box;border: 3.5em solid red;border-right-width: 7.5em;border-left-width: 7.5em;margin: 0 0 6rem 0; } #lock:before {content: "";box-sizing: border-box;position: absolute;border: 2.5em solid red;width: 14em;height: 12em;left: 50%;margin-left: -7em;top: -12em;border-top-left-radius: 7em;border-top-right-radius: 7em; } #lock:after {content: "";box-sizing: border-box;position: absolute;border: 1em solid red;width: 5em;height: 8em;border-radius: 2.5em;left: 50%;top: -1em;margin-left: -2.5em; }總結
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