#topBackground{
    background: url(https://pic002.cnblogs.com/images/2011/70278/2011052216374836.jpg) no-repeat center top;
    top: 0;
    height: 400px;
    position: fixed;
    width: 100%;
    z-index:-1;
}
#footer{
    bottom: 0px;
    height: 200px;
    position: fixed;
    width: 100%;
    background: url(https://pic002.cnblogs.com/images/2011/70278/2011052216374836.jpg) no-repeat center bottom;
    z-index: -1000;
    color: transparent;
    display:block !important;
}