CSS3 Transitions属性打造动画的下载按钮特效

一个网站的下载按钮应尽量吸引读者的注意。这意味着网页设计师应该非常重视文件的下载界面。一个页面这么多的文件，如图片，视频和插件可以通过直接HTTP下载共享。许多免费网站甚至发布图标集和PSD文件供用户免费下载。在这些元素很多的网页下载按钮非常重要。下面就给大家带来一款动画的下载按钮，效果图如下：

在线预览源码下载

这里不需要任何javaScript。我们需要的是引用一个外部的样式文件styles.css。这里所有的CSS文件和index.html文件在同一目录下面。

html代码：

 <div id="wrapper">        <h1>            CSS3 Animated Download Buttons</h1>        <div class="center">            <a target=_blank href="http://www.w2bc.com/shili" class="dlbtn">Download<span class="details">.zip<span                class="size">11.5 MB</span></span></a></div>        <br>        <br>        <div class="centerbig">            <a target=_blank href="http://www.w2bc.com/shili" class="dlbtn big">Download<span class="details"><span                class="dlicon"><i class="entypo">&#59256;</i></span>.zip<span class="size">11.5 MB</span></span></a></div></div>

css代码：

@font-face {  font-family: 'entypo';  src: url('entypo/entypo.eot');  src: url('entypo/entypo.eot?#iefix') format('embedded-opentype'),        url('entypo/entypo.woff') format('woff'),       url('entypo/entypo.ttf')  format('truetype'),       url('entypo/entypo.svg#svgFontName') format('svg');}html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, PRe, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video {  margin: 0;  padding: 0;  border: 0;  font-size: 100%;  font: inherit;  vertical-align: baseline;  outline: none;  -webkit-font-smoothing: antialiased;  -webkit-text-size-adjust: 100%;  -ms-text-size-adjust: 100%;  -webkit-box-sizing: border-box;  -moz-box-sizing: border-box;  box-sizing: border-box;}html { overflow-y: scroll; }body {  font-family: 'Helvetica', Arial, sans-serif;  font-size: 62.5%;  line-height: 1;  color: #414141;  margin: 45px 15px;  background: #ececec url('bg.png');}br { display: block; margin: 10px 0;} article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; }ol, ul { list-style: none; }input, textarea {   -webkit-font-smoothing: antialiased;  -webkit-text-size-adjust: 100%;  -ms-text-size-adjust: 100%;  -webkit-box-sizing: border-box;  -moz-box-sizing: border-box;  box-sizing: border-box;  outline: none; }blockquote, q { quotes: none; }blockquote:before, blockquote:after, q:before, q:after { content: ''; content: none; }strong, b { font-weight: bold; }em, i { font-style: italic; }table { border-collapse: collapse; border-spacing: 0; }img { border: 0; max-width: 100%; height: auto; width: 100%; }h1 {  font-size: 3.1em;  line-height: 1.55em;  text-align: center;  font-weight: bold;  font-family: 'Oswald', 'Helvetica', Arial, sans-serif;  margin-bottom: 35px;  color: #595959;}.entypo {  font-family: 'entypo', sans-serif;  }/** page structure **/#wrapper {  display: block;  max-width: 850px;  padding: 45px 35px;  margin: 0 auto;  background: #fff;  -webkit-border-radius: 7px;  -moz-border-radius: 7px;  border-radius: 7px;}.center {  width: 20%;  margin: 0 auto;}.centerbig {  width: 40%;  margin: 0 auto;}/** download button effect **/a.dlbtn {  display: inline-block;  position: relative;  height: 45px;  line-height: 40px;  overflow: hidden;  padding: 0 30px;  font-size: 12px;  font-weight: bold;  color: #c0c0c0;  background-color: #fff;  text-decoration: none;  cursor: pointer;  border: 3px solid #ddd;  -webkit-border-radius: 2px;  -moz-border-radius: 2px;  border-radius: 2px;  -webkit-transition: all 0.4s;  -moz-transition: all 0.4s;  transition: all 0.4s;}a.dlbtn:hover, a.dlbtn:focus {  color: #fff;  padding-right: 90px;  background-color: #5381bf;  border-color: #5381bf;}a.dlbtn .details {  position: absolute;  line-height: 11px;  top: 4px;  right: -15px;  opacity: 0;  background: #49668c;  color: #fff;  text-align: center;  padding: 3px 4px;  -webkit-border-radius: 3px;  -moz-border-radius: 3px;  border-radius: 3px;  -webkit-transition: right 0.4s linear, opacity 0.25s;  -moz-transition: right 0.4s linear, opacity 0.25s;  transition: right 0.4s linear, opacity 0.25s;}a.dlbtn .details .size {  display: block;  padding-top: 3px;}a.dlbtn:hover .details, a.dlbtn:focus .details {  right: 8px;  opacity: 1;}/** large download button **/a.dlbtn.big {  height: 115px;  line-height: 115px;  padding: 0 80px;  font-size: 26px;  -webkit-border-radius: 8px;  -moz-border-radius: 8px;  border-radius: 8px;}a.dlbtn.big:hover, a.dlbtn.big:focus {  padding-right: 160px;}a.dlbtn.big .details {  top: 10px;  font-size: 18px;  line-height: 20px;  padding: 6px 15px;}a.dlbtn.big:hover .details, a.dlbtn.big:focus .details {  right: 15px;}a.dlbtn .dlicon {  display: block;  font-size: 55px;  line-height: 30px;}/** responsive styles **/@media screen and (max-width: 620px) {  h1 { font-size: 2.7em; }  .center { width: 30%; }  .centerbig { width: 70%; }}@media screen and (max-width: 480px) {  h1 { font-size: 2.2em; }  .center { margin-left: 0; }  .centerbig { margin-left: -20px; }    a.dlbtn.big { padding: 0 70px; }  a.dlbtn.big:hover, a.dlbtn.big:focus { padding-right: 150px; }}

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