box-shadow的动效制作

<a href="/app/list">WEB小应用</a>

#list_nav li a {
    height: 38px;
    display: block;
    width: 150px;
    background: #FFF; 
    margin: 10px;
    text-decoration: none;
    border: 1px solid #2695F3;
    color: #fff;
    -moz-box-shadow: 200px 0 #2695F3 inset;
    box-shadow: 200px 0 #2695F3 inset;
    webkit-transition: box-shadow 0.3s;
    -moz-transition: box-shadow 0.3s;
    -o-transition: box-shadow 0.3s;
    transition: box-shadow 0.3s;
    border-radius: 5px;
}
#list_nav li a:hover {
    box-shadow: 5px 0 #2695F3 inset;
    color: #2695F3;
    margin-top: 10px;
}