第一步：需要掌握css的縮寫技巧
參考下面的文章即可
CSS縮寫最佳化CSS檔案的體積
CSS常用屬性縮寫執行個體[推薦]
第二步：用css線上格式化與壓縮公用程式
第三步：測試，看看經過壓縮後的css檔案，會不會導致頁面變形等問題，一般情況下不會，不排除特殊情況。別忘了備份樣式檔案啊。
下面是一般用於css壓縮的代碼，一般情況下，喜歡指令碼的朋友看下。具體的應用上面的兩部即可。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <title>CSS代碼格式化和加密化</title> <meta name="Generator" content="EditPlus"> <meta name="Author" content=""> <meta name="Keywords" content=""> <meta name="Description" content=""> </head> <body> <script language="JavaScript"> <!-- function $() { var elements = new Array(); for (var i = 0; i < arguments.length; i++) { var element = arguments[i]; if (typeof element == 'string') element = document.getElementById(element); if (arguments.length == 1) return element; elements.push(element); } return elements; } function CSSencode(code) { code = code.replace(/\n/ig,''); code = code.replace(/(\s){2,}/ig,'$1'); code = code.replace(/\t/ig,''); code = code.replace(/\n\}/ig,'\}'); code = code.replace(/\n\{\s*/ig,'\{'); code = code.replace(/(\S)\s*\}/ig,'$1\}'); code = code.replace(/(\S)\s*\{/ig,'$1\{'); code = code.replace(/\{\s*(\S)/ig,'\{$1'); return code; } function CSSdecode(code) { code = code.replace(/(\s){2,}/ig,'$1'); code = code.replace(/(\S)\s*\{/ig,'$1\n{'); code = code.replace(/\*\/(.[^\}\{]*)}/ig,'\*\/\n$1}'); code = code.replace(/\/\*/ig,'\n\/\*'); code = code.replace(/;\s*(\S)/ig,';\n\t$1'); code = code.replace(/\}\s*(\S)/ig,'\}\n$1'); code = code.replace(/\n\s*\}/ig,'\n\}'); code = code.replace(/\{\s*(\S)/ig,'\{\n\t$1'); code = code.replace(/(\S)\s*\*\//ig,'$1\*\/'); code = code.replace(/\*\/\s*([^\}\{]\S)/ig,'\*\/\n\t$1'); code = code.replace(/(\S)\}/ig,'$1\n\}'); code = code.replace(/(\n){2,}/ig,'\n'); return code; } //--> </script> CSS代碼格式化和加密化<hr> <textarea name="" rows="" cols="" id="code"> /*請將CSS代碼複製到這裡，下面是樣本*/ input,button{ height:20px;background-color: #ffffff;/*border:1px solid #333333;*/ } textarea{background-color: #ffffff;border: #3872b4 1px solid;} select{ height:20px;font-size: 12px;background-color: #ffffff;border:1px solid #333333; } a{ /*color:#794820;color:#000000;*/color:#004f8a;text-decoration: none;text-transform: capitalize; } a:link { text-decoration: none; } a:visited { text-decoration: none; } .input{border: #3872b4 1px solid;height:20px;line-height:20px;font-size:12px;} #result_dao{ border-right: #b3cad6 1px solid; padding-right: 0px;border-top: #b3cad6 1px solid; padding-left: 2px;font-size: 12px; float: left; padding-bottom: 0px; margin: 2px 0px; border-left: #b3cad6 1px solid; padding-top: 0px; border-bottom: #b3cad6 1px solid; background-color: #e6eff4;width:100%;text-align: left;text-indent:20px;color:#333333;} #content{ white-space: pre; } /***rss***/ .rss_b{/*border:1px solid #99ccff;*/ padding:1px;line-height:18px;font-size:12px;width:95px;height:18px;text-align:center} .rss_l{border:1px solid #99ccff;background:#99ccff;margin:0px;margin-right:3px;padding-left:2px;padding-right:2px;color:#ffffff;} .rss_a{border:1px solid #99ccff;background:#e8f3fd;margin:0px;padding-left:1px;padding-right:1px;color:#ffffff;} .rss_a:link{color:#99ccff;} .rss_a:visited{color:#99ccff;} .rss_a:hover{background-color: #e8f3fd;text-decoration: none;color:#008ed2;border:1px solid #99ccff;} /********rank*********/ .mo_{ background-color: #ffffff;width:48px !important;width:50px;border:1px solid #99ccff;cursor:pointer ; text-align: center;font-size:12px;float:left;border-top:1px solid #99ccff;border-bottom:1px solid #99ccff;text-decoration: underline;color:#cccccc;} .mu_{ background-color: #e8f3fd;width:48px !important;width:50px;cursor:pointer ; text-align: center;font-size:12px;float:left;border:1px solid #99ccff;border-top:1px solid #ff9966;border-bottom:1px solid #99ccff;text-decoration: underline;} .ms_{ background-color: #ffffff;border:1px solid #99ccff;border-top:1px solid #99ccff;border-bottom:1px solid #ffffff;width:48px !important;width:50px;height:25px !important;height:27px;cursor:default; text-align: center;font-size:14px;line-height:25px;float:left;} .mx_{ float:left;height:260px !important;height:250px; } #Hot_Div span{float:left;height:26px !important;height:27px;border-bottom:1px solid #99ccff;width:2px; } .top{background-image: url(bg2.gif);background-position: center -145px; background-repeat: repeat-x;padding-left:5px;margin-top:5px;width:730px;float:left;margin-left:8px;/*border:1px solid #e8f3fd;*/border-top:1px solid #99ccff;/*background-color: #e8f3fd;*/padding-bottom:5px;} .top h1{ font-family: arial, helvetica, sans-serif;font-size:15px;text-indent:5px;} .top li{float:left;width:48%;/*background-color: #e8f3fd;height:20px;*/} .belong_topic{ margin-left:15px;text-align:center;font-size:14px; } #article{ margin-left:10px;width:700px;margin-top:20px;word-break:break-all;overflow:scroll !important;overflow:default;float:left;background-color: #FAFAFA; } #copyright{width:700px;margin-left:20px;background-color: #F7F7F7;color:#8B8B8B;padding:10px;} #bd_more{display:none;} #page_p_div{width:100%;padding:auto;text-align: center;} #page{margin:0 auto;} /* #i_1{background-color:#fdf7ff;} #i_1 li{background-color:#fdf7ff;} #i_1 li{color:#333;} #i_1 li a{color:#333;} */ #i_1 .list2{border-top:1px solid #cc00ff;background-color: #ccccff;} #i_1 .list2 h1{color:#333;} #i_1 h3 a{color:#333;} </textarea> <input type="submit" onclick="$('code').value = CSSdecode($('code').value);" value="格式化"> | <input type="submit" onclick="$('code').value = CSSencode($('code').value);" value="加密化" /> </body> </html>
[Ctrl+A 全選 注:如需引入外部Js需重新整理才能執行]
