Make button background white )

Funny question. How can I make the button background white during hover?

.fi-btn {
    @apply hover:bg-white hover:text-primary-blue;
}

.fi-btn {
    @apply hover:bg-white hover:text-primary-blue;
}

.fi-btn {
    @apply hover:bg-white hover:text-primary-blue;
}

.fi-btn {
    @apply hover:bg-white hover:text-primary-blue;
}

Not working