#listeActiv
{
	width: 50%;
	margin: auto;
}

button
{
	margin-top: 20px;
}

@media only screen and (max-width: 800px) 
{
	#listeActiv
	{
		width: 100%;
		margin: auto;
	}

	button
	{
		width: 30%;
		margin-top: 20px;
	}
}