#login{
    width:100%;
    height:100%;
    position:relative;
    background-size: 100% 100%;
    background-image:url(../images/login_bg.jpg);
    background-repeat:no-repeat;
    background-position:center;
    background-attachment:fixed;
}
#login_group{
    position: absolute;
    bottom: 0%;
    right: calc(15% + 420px);
    width: calc(89.72vh);
    height: calc(85.19vh);
    background-size: cover;
    background-image:url(../images/login_group.png);
    background-repeat:no-repeat;
    background-position:center;
}