video {
	position: fixed;
			top: 50%;
			left: 50%;
			transform: translate(-50%, -50%);
			min-width: 100%;
			min-height: 100%;
			width: auto;
			height: auto;
			z-index: -100;
}

		#menu {
			display: flex;
			justify-content: space-around;
			padding: 10px;
		}
		
		#menu button {
			background-color: white;
			padding: 10px;
			border: none;
			font-size: 18px;
			cursor: pointer;
		}

		#contenu1, #contenu2, #contenu3 {
			display: none;
			width:80%;
	        height: 85vh;
		}

		#contenu1.show, #contenu2.show, #contenu3.show {
			display: block;
		}
		
.image{
	 text-align: center;
	 float: left;
	 width: 50%;
	 height: 100%;
	 max-width: 100%;
	 max-height: 100%;
}

.image img{
	 max-height: 100%;
}

.question{
	 float: right;
	 width: 50%;
}
		
.question h1{
	color:red;
}