.transitionWindow{
	position: fixed;
	display: block;
	top: 0;
	width: 0;
	z-index: 2;
	width: 100%;
	height: 100%;
	opacity: 0;
	background-color: var(--secondary-color);
	transition: opacity .5s;
}

#transitionWindowMessageElt{  
    
	/* position */
	width: 700px;
	position: fixed;
    left: 50%;
	top: 20%;
	
	/* set font */
	text-align: center;
	font-weight:  bold;
    font-size:  40px;
	user-select: none;
	cursor: default;
	
	transition: left 1s;

}