Blocs invisibles au départ 
.wp-block, 
.wp-block-group, 
.wp-block-column, 
.wp-block-cover, 
.wp-block-button {
    opacity: 1;
    /*transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;*/
}
/*

.wp-block-image img {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

// Quand la classe .visible est ajoutée 
.wp-block.visible,
.wp-block-group.visible,
.wp-block-column.visible,
.wp-block-cover.visible,
.wp-block-button.visible {
    opacity: 1;
    transform: translateY(0);
}

.wp-block-image.visible img {
    opacity: 1;
    transform: translateY(0);
}

.block-editor-page header,
.block-editor-page .wp-block-template-part {
    transition: none !important;
    transform: none !important;
    animation: none !important;
}

.block-editor-page .wp-block-template-part {
    will-change: auto !important;
    transition-property: none !important;
}
*/
header.wp-block-template-part {
    position: fixed; /* ou sticky selon le thème */
    top: 0;
	left: 0;
    width: 100%;
    z-index: 9999; /* très haut pour être au-dessus de tout */
}
.wp-lightbox-overlay:not(.active) {
  display: none !important;
}