body {
    background: url(https://dangcongsan.vn/Portal/DCSVN/images/bg-v2.png) repeat center top;
    line-height: 24px;
    background-size: 11%;
}
#footer{
 background-image: url("https://dangcongsan.vn/Portal/DCSVN/images/bg-footer.png") no-repeat center top snow;
}