/* Remove default navigation button outline styles and apply custom red hover */
.wp-block-navigation .wp-block-navigation-item.is-style-outline a {
    border: 1px solid transparent !important;
    background: transparent !important;
    color: inherit !important;
    transition: all 0.3s ease-in-out !important;
    box-shadow: none !important;
}

.wp-block-navigation .wp-block-navigation-item.is-style-outline a:hover {
    color: #ff0000 !important;
    border-color: #ff0000 !important;
    background-color: transparent !important;
}