.corps {
	max-width: 700px;
	margin: auto;
	border: 3px solid blue;
	background: rgba(255, 255, 255, 0.8);
}

html {
	background: url(notre_dame_de_l_assomption_vitrail.png);
	background-size: 50%;
	background-repeat: round;
	background-attachment: fixed; 
}

h1 {
	text-align: center;
	color: purple;
}

h2 {
	text-align: center;
	color: black;
}

.parag {
	max-width: 500px;
	margin: auto;
	text-align: center;
	
}

.image{
	text-align: center;
}

img{
	max-width: 500px;
}