.full-poster{
	position: fixed;
    left:0;
    top:0;
	height: 100%;
    width: 100%;
    background: url(http://www.newsimg.cn/m/img/football-poster.jpg);
    /*background-color: #ccc;*/
    background-size: 100% 100%;
	transition: all 0.5s;
	z-index: 100000;
    opacity:1;
}
.full-poster-hide{
	height: 0;
    opacity:0;
}