CSS 实现滑动门的实例代码

<a href="#">
        <span></span>
    </a>

a {
            color: white;
            line-height: 33px;
            margin: 100px;
            display: inline-block;
            text-decoration: none;
            /* a不能给宽度 */
            /*  */
            height: 33px;
            background: url(Images/vx.png) no-repeat;
            padding-left: 15px;
        }
        
        a span {
            display: inline-block;
            height: 33px;
            background: url(Images/vx.png) no-repeat right;
            padding-right: 15px;
        }

 <a href="#">
        <span>一</span>
    </a>
    <a href="#">
        <span>一句</span>
    </a>
    <a href="#">
        <span>一句话</span>
    </a>
    <a href="#">
        <span>一句长长的话</span>
    </a>
    <a href="#">
        <span>一句超级超级超级超级超级超级长的话</span>
    </a>