section a {
	text-decoration: none;
	color: #80CC28;
}

section a:hover {
	text-decoration: underline;
}

.bouton {
	background-color: #80CC28;
	color: #999;

	transition: background-position .5s, color .5s;
	background-image: linear-gradient(to right, #80CC2800 50%, #333 50%);
	background-size: 200% 100%;
	background-position: right bottom;

	margin-top: 4px;
	padding: 8px 24px;
}

.bouton:hover {
	text-decoration: none;
	background-position: left bottom;
	color: #fff;
}