.mobileLogin-Header {
    z-index: 1;
    background-image: url(https://lms.seaedu.edu.vn/accounts/1/files/59/download?verifier=590VmQZn8hQ6Iiwlgdf7TUDGTOnbofCqBOJ7944j) !important;
    background-position: center;
    background-repeat: no-repeat;
    background-size: 156px 156px;
    min-height: 156px;
}