#BackToTop {
    float: left;
    display:none;
    margin: 0 5px;
    padding: 3px;
    text-decoration: none;
    border: 1px solid #ccc;
    font: bold 14px Arial, Helvetica;
    font-family:"微软雅黑";
    position:fixed;
    bottom:5%;
    right:10px;
    z-index: 1000;



    /*********************/
    /** CSS3 properties **/
    /*********************/
    /** Background gradient **/
    background-color: #fff;

    /** box Radius **/
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border-radius: 5px;

    /** Box shadow **/
    -moz-box-shadow: 0 1px 0 rgba(255, 255, 255, 0.3), 0 3px 0 rgba(0, 0, 0, 0.7), 0 2px 2px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255, 255, 255, 0.5) inset;
    -webkit-box-shadow: 0 1px 0 rgba(255, 255, 255, 0.3), 0 3px 0 rgba(0, 0, 0, 0.7), 0 2px 2px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255, 255, 255, 0.5) inset;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.3), 0 1px 0 rgba(0, 0, 0, 0.7), 0 2px 2px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255, 255, 255, 0.5) inset;
}

#BackToTop span
{
    display: block;
    padding: 4px 15px;
    cursor: pointer;

    /*********************/
    /** CSS3 properties **/
    /*********************/
    /** Background gradient **/
    background-color: #fff;
}