main{
	display: flex;
	flex-direction: column;
}

header{
	margin-bottom: 0;
}
#presentation{
	position: relative;
	height: 100vh;

}
#background-video{
	filter: blur(3px);
	height: 100vh;
	width: 100vw;
	object-fit: cover;
	position: fixed;
	left: 0;
	right: 0;
	top: 0;
	z-index: -5;
}




#img_gauche_txt_droite{

	display: flex;
	flex-direction: row-reverse;
	justify-content: space-around;
	align-items: center;
	padding-bottom: 20vh;

}



#img_gauche_txt_droite p{
	background-color: rgba(250,250,250,0.2);
	backdrop-filter: blur(10px);
	border-radius: 30px;
	width: 40%;
	padding: 1%;
}


#img_droite_txt_gauche{
	display: inline-flex;
	flex-direction: row;
	justify-content: space-around;
	align-items: center;
	padding-bottom: 20vh;
}


#img_droite_txt_gauche p{
	background-color: rgba(250,250,250,0.2);
	backdrop-filter: blur(10px);
	border-radius: 30px;
	padding: 1%;
	width: 40%;
}



.img_main{
	backdrop-filter: blur(10px);
	height: 20rem;
	width: 25rem;
	border-radius: 15px;
	transition: transform ease 0.4s;
	filter: saturate(0.2);
}

.img_txt:hover .img_main{
	box-shadow: 0 40px 60px rgba(150,0,0,0.7);
	transform: scale(1.2,1.2);
	transition: transform ease 0.8s;
	filter: saturate(1);
}

#img_gauche_txt_droite:not(:hover) p{
	background-color: rgba(150,150,150,0.4);
}

#img_droite_txt_gauche:not(:hover) p{
	background-color: rgba(150,150,150,0.4);
}



#fond_2{
	z-index: 10;
	backdrop-filter: blur(10px);
	text-align: center;
	display: flex;
	flex-direction: column;
	align-items: center;
	background-color: rgba(0, 0, 0, 0.5);
	color: white;
	padding-bottom:20%;
}


#fond_2 video{
	margin: 1%;
}
@media only screen and (max-width: 800px){

	body{
		width: 100vw;
	}
	#img_droite_txt_gauche{
		width: 100vw;
	}

	#menu-ordi{
		display: none;
	}

	#menu-mobile{
		position: fixed;
		display: block;
	}
}