之前给大家带了很多款进度加载条，今天再给大家分享一款纯css3实现的动画加载特效。效果图如下：
在线预览 源码下载
实现的代码。
html代码：
<div class="wrap"> <div class="curve3"> </div> <div class="curve2"> <div class="text"> 15 </div> </div> <div class="curve"> <div class="topleft"> </div> <div class="bottomright"> </div> </div> <div class="bottomleft glow"> </div> <div class="topright"> </div> </div>
css3代码：
body { background: #252527;}.wrap { width:200px; margin-left:auto; margin-right:auto; position:relative;}.curve { left:200px; width:200px; height:200px; border-radius:100px; background: #252527; -webkit-animation: spin 1.5s; -webkit-animation-iteration-count: infinite; -webkit-animation-timing-function: linear; -moz-animation: spin 1.5s; -moz-animation-iteration-count: infinite; -moz-animation-timing-function: linear; animation: spin 1.5s; animation-iteration-count: infinite; animation-timing-function: linear;}@-webkit-keyframes spin { 0% { -webkit-transform: rotate(0deg);} 100% {-webkit-transform: rotate(360deg);}}@-moz-keyframes spin { 0% { -moz-transform: rotate(0deg);} 100% {-moz-transform: rotate(360deg);}}@keyframes spin { 0% { -moz-transform: rotate(0deg);} 100% {-moz-transform: rotate(360deg);}}.curve3 { position:absolute; margin-top:149px; width:200px; height:200px; border-radius:100px; box-shadow: 0px 3px 5px 0.02em #888888;}.glow { box-shadow: 0px 3px 15px 0.02em #888888}.topleft { width:100px; height:100px; border-top-left-radius:100px; background:-webkit-linear-gradient(top right, #AAAAB3 10%, #252527 80%); background:-moz-linear-gradient(top right, #AAAAB3 10%, #252527 80%); background:linear-gradient(to bottom left, #AAAAB3 10%, #252527 80%);}.bottomright { width:100px; height:100px; border-bottom-right-radius:100px; background:-webkit-linear-gradient( top right, #252527 20%, #AAAAB3 90%); background:-moz-linear-gradient( top right, #252527 20%, #AAAAB3 90%); background:linear-gradient( to bottom left, #252527 20%, #AAAAB3 90%); position:relative; left:100px;}.curve2 { top:175px; left:25px; position:relative; width:150px; height:150px; border-radius:100px;background-color:#252527; z-index:2; box-shadow: 0px 0px 5px 0.02em #888888;}.text { display:inline-block; font-family: 'Oswald'; font-size:80px; margin-left: 40px; margin-top: 16px; background:-webkit-linear-gradient( top left, white, #ffd700, #998100 80%); -webkit-background-clip:text; -webkit-text-fill-color: transparent; color:#ffd700;}.bottomleft { width:50px; height:50px; margin-right:; border-bottom-left-radius:50px; background:#252527; position:relative; z-index:-4; top:-100px;}.glow { box-shadow: 16px 30px 30px 5px #ffffff;}.topright { width:50px; height:50px; border-top-right-radius:50px; background:#252527; position:relative; left:125px; bottom:220px; box-shadow: 5px -5px 35px 5px #ffffff; z-index:-4;}via：http://www.w2bc.com/Article/19040
