#login-form .login-domain-field {
    align-items: stretch;
    display: flex;
    width: 100%;
}

#login-form .login-domain-field input {
    border-bottom-right-radius: 0;
    border-top-right-radius: 0;
    min-width: 0;
}

#login-form .login-domain-suffix {
    align-items: center;
    background: var(--input-addon-bg, #f3f4f5);
    border: 1px solid var(--input-border-color, #ced4da);
    border-left: 0;
    border-bottom-right-radius: .25rem;
    border-top-right-radius: .25rem;
    color: var(--input-color, #495057);
    display: flex;
    flex: 0 0 auto;
    font-size: 1rem;
    line-height: 1.5;
    padding: .375rem .75rem;
    white-space: nowrap;
}

@media screen and (max-width: 480px) {
    #login-form .login-domain-suffix {
        font-size: .875rem;
        padding-left: .5rem;
        padding-right: .5rem;
    }
}