/* 椤堕儴鑳屾櫙鍥� */
.content .topbg {
    position: absolute;
    top: 0;
    width: 100%;
    left: 0;
    display:none;
}

/* 搴曢儴鑳屾櫙鍥� */
.content .downbg {
    position: absolute;
    bottom: 0;
    width: 100%;
    left: 0;
	display:none;
}