css通过边框实现一些简单的图片特效
我们在做css的时候为了提高网站的效率减少服务器请求，我们可以通过css来实现一些简单的图片特效，比如说三角形，这篇文章讲解的是通过边框实现不同的效果。
代码部分：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> .style-border b { border-width:100px; border-color:orange blue yellow red; width:0px; height:0; vertical-align:middle; display:inline-block; margin:10px; } .style-border .style-10 { width:110px; height:100px; border-width:50px 40px; font-size:15px; line-height:30px; } .style-border .solid { border-style:solid; } .style-border .dotted { border-style:dotted; } .style-border .dashed { border-style:dashed; } .style-border .double { border-style:double; } .style-border .groove { border-style:groove; } .style-border .ridge { border-style:ridge; } .style-border .inset { border-style:inset; } .style-border .outset { border-style:outset; } </style> </head> <body> <div class="style-border"> <b class="solid style-10">实线：solid</b> <b class="solid"></b> <b class="dotted style-10">点线：dotted</b> <b class="dotted"></b> <b class="dashed style-10">虚线：dashed</b> <b class="dashed"></b> <b class="double style-10">双线：double</b> <b class="double"></b> <b class="groove style-10">3D凹槽：groove</b> <b class="groove"></b> <b class="ridge style-10">3D凸槽：ridge</b> <b class="ridge"></b> <b class="inset style-10">3D凹边：inset</b> <b class="inset"></b> <b class="outset style-10">3D凸边：outset</b> <b class="outset"></b> </div> </body> </html> 
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> .one-border b { border-width:100px; border-color:orange blue yellow red; width:0px; height:0; vertical-align:middle; display:inline-block; margin:10px; } .one-border .b-1 { border-width:20px 20px 0; border-color:orange transparent transparent; border-style:solid dashed dashed; } .one-border .b-2 { border-width:20px 20px 20px 0; border-color:transparent orange transparent transparent; border-style:dashed solid dashed dashed; } .one-border .b-3 { border-width:0 20px 20px 20px; border-color:transparent transparent orange; border-style:dashed dashed solid; } .one-border .b-4 { border-width:20px 0 20px 20px; border-color:transparent transparent transparent orange; border-style:dashed dashed dashed solid; } .one-border .b-5 { border-width:5px 30px 50px 30px; border-color:#efefef #ccc #ddd orange; border-style:solid; } .one-border .b-6 { border-width:44px 22px 15px; border-color:#ccc #eee #aaa orange; border-style:solid; } .one-border .b-7 { border-width:0 0px 55px 55px; border-color:#ccc #eee #aaa orange; border-style:solid; } .one-border .b-8 { border-width:55px 0px 0px 55px; border-color:#ccc #eee #aaa orange; border-style:solid; } .one-border .b-9 { border-width:20px 0 50px 23px; border-color:#ccc #eee #aaa orange; border-style:solid; } .one-border .b-10 { border-width:23px 5px 0 50px; border-color:orange #ccc #eee #aaa; border-style:solid; } .one-border .b-11 { border-width:15px 44px 0 22px; border-color:orange #ccc #eee #aaa; border-style:solid; } .one-border .b-12 { border-width:55px 55px 0 0px; border-color:orange #ccc #eee #aaa; border-style:solid; } .one-border .b-13 { border-width:55px 0px 0 55px; border-color:orange #ccc #eee #aaa; border-style:solid; } .one-border .b-14 { border-width:55px 55px 0 0px; border-color:#ccc orange #eee #aaa; border-style:solid; } .one-border .b-15 { height:45px; border-width:5px 3px; border-color:transparent orange transparent transparent; border-style:solid; } .one-border .b-16 { height:45px; border-width:5px 3px; border-color:transparent transparent transparent orange; border-style:solid; } </style> </head> <body> <div class="one-border"> <b class="b-1"></b> <b class="b-2"></b> <b class="b-3"></b> <b class="b-4"></b> <b class="b-5"></b> <b class="b-6"></b> <b class="b-7"></b> <b class="b-8"></b> <b class="b-9"></b> <b class="b-10"></b> <b class="b-11"></b> <b class="b-12"></b> <b class="b-13"></b> <b class="b-14"></b> <b class="b-15"></b> <b class="b-16"></b> </div> </body> </html> 
代码：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> .two-border b { border-width:100px; border-color:orange blue yellow red; width:0px; height:0; vertical-align:middle; display:inline-block; margin:10px; } .two-border .b-1 { border-width:20px; border-color:orange orange transparent transparent; border-style:solid solid dashed dashed; } .two-border .b-2 { border-width:20px; border-color:transparent orange orange transparent; border-style:dashed solid solid dashed; } .two-border .b-3 { border-width:20px; border-color:transparent transparent orange orange; border-style:dashed dashed solid solid; } .two-border .b-4 { border-width:20px; border-color:orange transparent transparent orange; border-style:solid dashed dashed solid; } .two-border .b-5 { border-width:20px; border-color:orange transparent orange transparent; border-style:solid dashed solid dashed; } .two-border .b-6 { border-width:20px; border-color:transparent orange transparent orange; border-style:dashed solid dashed solid; } .two-border .b-7 { border-width:38px 45px 7px 21px; border-color:orange orange transparent transparent; border-style:dashed solid dashed solid; } .two-border .b-8 { border-width:38px 45px 7px 21px; border-color:orange transparent transparent orange; border-style:dashed solid dashed solid; } .two-border .b-9 { border-width:20px; border-color:orange; border-style:double outset; } .two-border .b-10 { border-width:20px; border-color:orange orange transparent transparent; border-style:groove ridge inset dashed; } </style> </head> <body> <div class="two-border"> <b class="b-1"></b> <b class="b-2"></b> <b class="b-3"></b> <b class="b-4"></b> <b class="b-5"></b> <b class="b-6"></b> <b class="b-7"></b> <b class="b-8"></b> <b class="b-9"></b> <b class="b-10"></b> </div> </body> </html> 
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> .three-border b { border-width:100px; border-color:orange blue yellow red; width:0px; height:0; vertical-align:middle; display:inline-block; margin:10px; } .three-border .b-1 { border-width: 20px; border-color: orange; border-style: double outset; } .three-border .b-2 { border-width: 20px; border-color: orange orange orange transparent; border-style: groove ridge inset dashed; } .three-border .b-3 { border-width: 20px; border-color: orange transparent orange orange; border-style: solid dashed solid solid; } .three-border .b-4 { border-width: 20px; border-color: orange orange transparent orange; border-style: solid solid dashed solid; } .three-border .b-5 { border-width: 20px; border-color: orange orange orange transparent; border-style: solid solid solid dashed; } .three-border .b-6 { border-width: 20px; border-color: transparent orange orange orange; border-style: dashed solid solid solid; } </style> </head> <body> <div class="three-border"> <b class="b-1"></b> <b class="b-2"></b> <b class="b-3"></b> <b class="b-4"></b> <b class="b-5"></b> <b class="b-6"></b> </div> </body> </html> 
代码：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> .showCase { padding:20px; } .showCase:after, .showCase:before { display: table; content: ""; clear:both; } .showCase div { position:relative; } .showCase div b { position:absolute; font-size:0px; line-height:0px; margin:0; } .case-1 { border:5px solid orange; width:500px; height:150px; } .case-1 b { left:50px; border-style:dashed dashed solid; } .case-1 b.b-1 { border-width:0px 20px 15px; border-color:transparent transparent orange; top:-15px; } .case-1 b.b-2 { border-width:0px 20px 15px; border-color:transparent transparent white; top:-10px; } .case-2 { background-color:orange; width:500px; height:150px; float:left; margin-right:30px; } .case-2 b { left:50px; border-style:solid dashed dashed; } .case-2 b.b-1 { border-width:15px 20px 0px; border-color:orange transparent transparent; bottom:-14px; } .case-2-1 { width:300px; height:130px; margin-left:0px; background-color:orange; float:left; } .case-2-1 b.b-1 { border-width:20px 10px 0 60px; border-color:orange transparent; border-style:solid dashed; bottom:-20px; left:60px; } .case-3 { border:5px solid orange; width:250px; height:100px; margin-left:50px; } .case-3 b { top:15px; border-style:dashed solid dashed solid; border-width:20px 15px 20px 0px; } .case-3 b.b-1 { border-color:transparent orange transparent orange; left:-15px; } .case-3 b.b-2 { border-color:transparent white transparent transparent; left:-10px; } .case-4 { border:5px solid orange; width:250px; height:100px; margin-left:50px; background-color:orange; } .case-4 b { top:15px; border-style:dashed solid dashed solid; border-width:20px 0px 20px 15px; } .case-4 b.b-1 { border-color:transparent orange transparent orange; right:-15px; } .case-4 b.b-2 { border-color:transparent white transparent white; right:-10px; display:none; } .case-5 { border:5px solid orange; width:200px; height:80px; margin:10px 0 10px 50px; background-color:orange; float:left; } .case-5 b.b-1 { top:5px; border-color:orange orange transparent transparent; border-style:solid solid dashed dashed; border-width:20px; left:-40px; } .case-5 b.b-2 { top:0px; border-color:#fff #fff transparent transparent; border-style:solid solid dashed dashed; border-width:10px 20px 10px 28px; left:-53px; } .case-5-1 { width:200px; height:80px; margin-left:10px; background-color:orange; padding:5px; margin:10px 0px 10px 50px; float:left; } .case-5-1 b.b-1 { top:15px; border-color:transparent orange; border-style:solid solid dashed; border-width:0px 0px 40px 40px; right:-40px; } .case-5-1 b.b-2 { top:15px; border-color:transparent #fff; border-style:solid solid dashed; border-width:0px 0px 15px 40px; right:-40px; } .case-6 { background-color:orange; width:150px; height:30px; } .case-6 b.b-1 { border-width:15px 25px; border-style:solid dashed solid solid; border-color:orange transparent orange orange; right:-28px; top:0px; } .case-6 b.b-2 { border-width:2px 2px 2px 0px; border-style:dashed solid dashed dashed; border-color:transparent orange transparent transparent; left:-2px; top:0px; height:26px; } .case-7 { background-color:orange; width:150px; height:30px; margin-left:30px; } .case-7 b { height:26px; top:0px; } .case-7 b.b-1 { border-color:transparent orange transparent transparent; border-width:2px 2px 2px 0px; border-style:dashed solid dashed solid; left:-2px; } .case-7 b.b-2 { border-color:transparent transparent transparent orange; border-width:2px 0px 2px 2px; border-style:dashed solid dashed solid; right:-2px; } </style> </head> <body> <div class="showCase"> <div class="case-1"><b class="b-1"></b><b class="b-2"></b></div> </div> <div class="showCase"> <div class="case-2"><b class="b-1"></b></div> <div class="case-2-1"><b class="b-1"></b><b class="b-2"></b></div> </div> <div class="showCase"> <div class="case-3"><b class="b-1"></b><b class="b-2"></b></div> </div> <div class="showCase"> <div class="case-4"><b class="b-1"></b><b class="b-2"></b></div> </div> <div class="showCase"> <div class="case-5"><b class="b-1"></b><b class="b-2"></b></div> <div class="case-5-1"><b class="b-1"></b><b class="b-2"></b></div> </div> <div class="showCase"> <div class="case-6"><b class="b-1"></b><b class="b-2"></b></div> </div> <div class="showCase"> <div class="case-7"><b class="b-1"></b><b class="b-2"></b></div> </div> </body> </html> 原文链接：https://www.qiquanji.com/post/7125.html
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