#site_nav_under {
    display: none;
}
.c_ad_block, .ad_text_commentbox {
    display: none;
    margin: 0;
    padding: 0;
}
#ad_under_google 
    height: 0;
    overflow: hidden;
}
#ad_under_google a {
    display: none;
}
#ad_t2{
    display: none;
    margin: 0;
    padding: 0;
}


<style>
    #page_end_html{    
      position: fixed;
      right: 100px;
      top: 400px;
    }
    /*最外层容器样式*/
    .wrap {
	       width: 100px;
               height: 100px;
               margin: 15px;
               position: relative;
    }
 
    /*包裹所有容器样式*/
    .cube {
        width: 50px;
        height: 50px;
        margin: 0 auto;
        transform-style: preserve-3d;
        transform: rotateX(-30deg) rotateY(-80deg);
        animation: rotate linear 20s infinite;
    }
 
    @-webkit-keyframes rotate {
        from {
            transform: rotateX(0deg) rotateY(0deg);
        }
        to {
            transform: rotateX(360deg) rotateY(360deg);
        }
    }
 
    .cube div {
        position: absolute;
        width: 200px;
        height: 200px;
        opacity: 0.8;
        transition: all .4s;
    }
 
    /*定义所有图片样式*/
    .pic {
        width: 150px;
        height: 150px;
    }
 
    .cube .out_front {
        transform: rotateY(0deg) translateZ(100px);
    }
 
    .cube .out_back {
        transform: translateZ(-100px) rotateY(180deg);
    }
 
    .cube .out_left {
        transform: rotateY(-90deg) translateZ(100px);
    }
 
    .cube .out_right {
        transform: rotateY(90deg) translateZ(100px);
    }
 
    .cube .out_top {
        transform: rotateX(90deg) translateZ(100px);
    }
 
    .cube .out_bottom {
        transform: rotateX(-90deg) translateZ(100px);
    }
 
    /*定义小正方体样式*/
    .cube span {
        display: block;
        width: 100px;
        height: 100px;
        position: absolute;
        top: 50px;
        left: 50px;
    }
 
    .cube .in_pic {
        width: 100px;
        height: 100px;
    }
 
    .cube .in_front {
        transform: rotateY(0deg) translateZ(50px);
    }
 
    .cube .in_back {
        transform: translateZ(-50px) rotateY(180deg);
    }
 
    .cube .in_left {
        transform: rotateY(-90deg) translateZ(50px);
    }
 
    .cube .in_right {
        transform: rotateY(90deg) translateZ(50px);
    }
 
    .cube .in_top {
        transform: rotateX(90deg) translateZ(50px);
    }
 
    .cube .in_bottom {
        transform: rotateX(-90deg) translateZ(50px);
    }
 
    /*鼠标移入后样式*/
    .cube:hover .out_front {
        transform: rotateY(0deg) translateZ(200px);
    }
 
    .cube:hover .out_back {
        transform: translateZ(-200px) rotateY(180deg);
    }
 
    .cube:hover .out_left {
        transform: rotateY(-90deg) translateZ(200px);
    }
 
    .cube:hover .out_right {
        transform: rotateY(90deg) translateZ(200px);
    }
 
    .cube:hover .out_top {
        transform: rotateX(90deg) translateZ(200px);
    }
 
    .cube:hover .out_bottom {
        transform: rotateX(-90deg) translateZ(200px);
    }
</style>