@media only screen and (max-width: 530px){
    #headline{
        margin-right: -300px;
    }
    #loginForm{
        width: 400px;
        height: 450px;
    }
    .error{
        font-size: 12px;
        width: 300px;
        height: 25px;
    }
    #usern, #pwd{
        width: 300px;
    }
    #submit{
        margin-bottom: 20px;
    }
    #backbutton,#submit{
        height: 40px;
        font-weight: 500;
    }
    #submit{
        margin-left: 10px;
    }
}