div {
	width: 100%;
	border: 1px solid lightgrey;
	padding: 15px;
	margin: 15px 0;
	border-radius: 5px;
}
form {
	padding: 20px;
}
p {
	padding: 0;
	margin: 0 0 20px 0;
	border-bottom: 1px solid grey;
	font-size: 18px;
}
strong {
	font-size: 15px;
}
#calcul {
	width: 100%;
	padding: 10px;
}
input[type=radio] {
	margin: 0 10px;
}