td.centre
{
	text-align: center;
	background-color: #3afc00;
}

td.gauche
{
	text-align: left;
	background-color: #3afc00;
}

th
{
	background-color: #FF6600;
    color: black;
	text-align: center;
	font-size: 120%;
}

form
{
  text-align: center;
}

div.container
{
    width: 50%; /* adjust to desired width */
    margin: 0 auto; /* center the container */
}