.wp-block-template-part.header {
    border-bottom: 1px solid var(--wp--preset--color--neutral);
    background-color: #fff;
}

.transparent-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

/* Adjust for WordPress admin bar when logged in */
.admin-bar .transparent-header {
    top: 32px;
}

/* Responsive admin bar adjustment for mobile */
@media screen and (max-width: 782px) {
    .admin-bar .transparent-header {
        top: 46px;
    }
}