.cadre_dossier {
	--bg: none;
	position: relative;
	background-size: cover;
	background-position: center;

	.conteneur_dossier{
		display: flex;
		gap: 3rem;
		position: relative;
		z-index: 3;
		flex-wrap: wrap;
	}

	&::after {
		content: "";
		position: absolute;
		inset: 0;
		background-image: var(--bg);
		background-size: cover;
		background-position: center;
		opacity: 0;
		transition: opacity .4s ease;
		pointer-events: none;
	}
}

/* quand on a la classe 'hovering' on affiche */
.cadre_dossier.hovering::after {
	opacity: 1;
    filter: blur(2px) brightness(0.75);
}