body{background-color : lightblue}
#bandeau { width : 100% ; height : 100px ; background-color : blue; text-align : center ; margin-bottom : 100px }
#contenu { width : 50% ;height : 400px; background-color : orange ; text-align : center; overflow : auto}

table {
  font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
  border: 1px solid #FFFFFF;
  text-align: center;
  border-collapse: collapse;
}
table td, table th {
  border: 1px solid #FFFFFF;
  padding: 3px 2px;
}
table tbody td {
  font-size: 13px;
}
table tr:nth-child(even) {
  background: #D0E4F5;
}
table thead {
  background: #0B6FA4;
  border-bottom: 5px solid #FFFFFF;
}
table thead th {
  font-size: 17px;
  font-weight: bold;
  color: #FFFFFF;
  text-align: center;
  border-left: 2px solid #FFFFFF;
}
table thead th:first-child {
  border-left: none;
}

table tfoot td {
  font-size: 14px;
}



button {
	height:50px;
	width:500px;
	box-shadow: 0px 0px 0px 2px #9fb4f2;
	background:linear-gradient(to bottom, #7892c2 5%, #476e9e 100%);
	background-color:#7892c2;
	border-radius:10px;
	border:1px solid #4e6096;
	display:inline-block;
	cursor:pointer;
	color:#ffffff;
	font-family:Arial;
	font-size:19px;
	padding:12px 37px;
	text-decoration:none;
	text-shadow:0px 1px 0px #283966;
}
button:hover {
	background:linear-gradient(to bottom, #476e9e 5%, #7892c2 100%);
	background-color:#476e9e;
}
button:active {
	position:relative;
	top:1px;
}



.bouton_rouge {
	box-shadow: 3px 4px 0px 0px #8a2a21;
	background:linear-gradient(to bottom, #c62d1f 5%, #f24437 100%);
	background-color:#c62d1f;
	border-radius:18px;
	border:1px solid #d02718;
	display:inline-block;
	cursor:pointer;
	color:#ffffff;
	font-family:Arial;
	font-size:17px;
	padding:7px 25px;
	text-decoration:none;
	text-shadow:0px 1px 0px #810e05;
}
.bouton_rouge:hover {
	background:linear-gradient(to bottom, #f24437 5%, #c62d1f 100%);
	background-color:#f24437;
}
.bouton_rouge:active {
	position:relative;
	top:1px;
}