Why don't the login changes apply?

[Il Domandatore]

I've made CSS changes to the login text and text fields, but the changes don't stay.

 

/* It removes the border and outline in the login text field. */
input#user_login:focus-visible {
    outline: none !important;
    border: none !important;
}

/* It removes the border and outline in the login text field. */
input#user_pass:focus-visible {
    outline: none !important;
    border: none !important;
}

/* It removes the border in the login text field. */
input#user_pass {
    border: none !important;
}

/*It adds the hover outline in the login text field. */
input#user_pass:hover {
    outline: 3px solid black !important;
}

/*It adds the hover outline in the login text field. */
input#user_login:hover {
    outline: 3px solid black !important;
}

/* It removes the underline on login on the menu. */
.site-header-above-section-right-center.site-header-section.ast-flex.ast-grid-right-center-section a:link {
    text-decoration: none !important;
}

Login

Results unchanged.