#login-main {
     & >  form {
        margin: 80px auto;
        width: 400px;
        padding: 50px;
        margin-top: 8px;
        border: 1px solid black;
    }


    & .input-group{
        width:100%;
    }

    & .input-group-addon {
        width:100px;
        border-radius:0;
    }

    & .form-control{
        font-size:large;
    }

    & input[type=username]
    {
        width:100%;
        border-radius:0;
    }

    & input[type=password]{
        width:100%;
        margin-top:-1px;
        border-radius:0;
    }

    & button[type=submit]{
        margin-top:10px;
        width:100%;
    }

    & input[type=password]:focus,input[type=username]:focus{
        z-index: 5;
    }

    & #pwd-addon{
        border-top:none;
    }

}