body {
		margin:0;
		min-height:100vh;
		background-image:url("tableau_Z5L900_1366horsF11.jpg");
		background-size:921px auto; /* 1558 < C3 */
		background-position-x: 441px;
		background-position-Y: 0px;
		background-repeat: no-repeat;
		background-color: #000;
		background-position:absolute;
		/* cursor:none; */
		overflow:hidden ;
}
#loupe{
		width:900px; /* 900 < B15 */
		height:900px;
		border:solid 6px #FFF;
		border-radius :450px; /* 450 < B14 */
		position:absolute;
		top : 0px ;
		background-image:url("tableau_Z5L900_1366horsF11.jpg");
		background-size:921px auto; /* 1558 < C3 */
		background-repeat: no-repeat;
		box-shadow: 0 0 10px rgba(0,0,0,0.6);
		filter:brightness(1.3);
}
#cadre{
		width:440px; /* 900 < B15 */
		height: 100%;
		overflow : hidden;
		position:absolute;
		top : 0px ;
		left:0px;
}