@media only screen and (min-width: 100px) and (max-width: 900px) {
    #section-login-form { 
        margin-top: 40px;
        border-top: 1px solid #e4e4e4;
        padding-top: 25px;
    }
}

#l-login {
    max-width:800px;
    padding:20px 0;
    width:100%;
    position:relative;
    margin: 40px;
}