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css功能強大,能實現很多炫
酷的效果,今天給大家分享
用css3繪制聊天氣泡的方法:
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在繪制氣泡之前,先實現箭
頭的繪制,代碼如下:
1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>arrow</title>
6 <style type="text/css">
7 *{
8 margin:0;
9 padding:0;
10 }
11 #box{
12 width:0;
13 height:0;
14 border-top:30px solid black;
15 border-left:30px solid green;
16 border-right:30px solid red;
17 border-bottom:30px solid blue;
18 }
19 </style>
20 </head>
21 <body>
22 <div id="box"></div>
23 </body>
24 </html>

效果如上圖所示;
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從上面的圖可以發現,在未設
置寬高的情況下,上下左右的
邊框都是一個三角形,如果只
留下某一個方向上的border,
就可以實現三角箭頭的效果;
實現css代碼和效果如下:
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1 #box{
2 width:0;
3 height:0;
4 border-top:30px solid black;
5 border-left:30px solid transparent;
6 border-right:30px solid transparent;
7 border-bottom:30px solid transparent;
8 }

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通過上面的箭頭,我們就可以
繪制出一個聊天氣泡了,代碼
如下:
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1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>arrow</title>
6 <style type="text/css">
7 *{
8 margin:0;
9 padding:0;
10 }
11 #box{
12 position: relative;
13 top:100px;
14 left:100px;
15 width: 140px;
16 height: 100px;
17 background: #088cb7;
18 -moz-border-radius: 12px;
19 -webkit-border-radius: 12px;
20 border-radius: 12px;
21 }
22 #box:before{
23 position: absolute;
24 content: "";
25 width: 0;
26 height: 0;
27 right: 100%;
28 top: 38px;
29 border-top: 13px solid transparent;
30 border-right: 26px solid #088cb7;
31 border-bottom: 13px solid transparent;
32 }
33 </style>
34 </head>
35 <body>
36 <div id="box"></div>
37 </body>
38 </html>

效果如上圖所示:
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感謝大家的閱讀;

