让Bootstrap的Refresh Icon也spin起来

bootstrap下面有个glyphicon-refresh,但是不会自定动态spin[旋转],下面提供下我的实例

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.spin{
-webkit-transform-origin: 50% 50%;
transform-origin:50% 50%;
-ms-transform-origin:50% 50%; /* IE 9 */
-webkit-animation: spin .8s infinite linear;
-moz-animation: spin .8s infinite linear;
-o-animation: spin .8s infinite linear;
animation: spin .8s infinite linear;
}

@-webkit-keyframes spin {
0% {
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
}
100% {
-webkit-transform: rotate(359deg);
transform: rotate(359deg);
}
}
@keyframes spin {
0% {
-webkit-transform: rotate(0deg);
transform: rotate(0deg);
}
100% {
-webkit-transform: rotate(359deg);
transform: rotate(359deg);
}
}

调用方式如下

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<span class="glyphicon glyphicon-refresh loading spin"> </span>