body
{
  font-family:Tahoma;
  font-size:15px;
  width:1200px;
  margin:auto;
}

table, th, td
{
border: none;
}

table
{
border-collapse:collapse;
}

table
{
width:100%;
}

th
{
height:50px;
text-align:center;
}

td
{
text-align:center;
vertical-align:top;
padding:5px;
}

.lignePaire
{
  background-color:#DDFFDD;
}

th, h1
{
background-color:green;
color:white;
}

form, h1, h4
{
  text-align:center;
}

p {
  text-align:justify;
}

h3 {
  text-align:left;
}

img
{
  margin:0px;
}

a
{
  text-decoration:none;
}

a, a:visited, a:hover, a:focus
{
  color:black;
}

#pied_de_page
{
  clear:both;
  text-align:right;
  color:gray;
}

h2
{
  text-align:left;
}

#navigatorbas, #description
{
  width: 800px;
  margin-left: 200px;
  margin-right: 200px;
}

#description
{
  text-align: justify;
}

#flechegauche
{
  float: left;
}

#flechedroite
{
  float: right;
}

a img
{
  border: none;
  vertical-align: middle;
}

hr
{
  clear: both;
}

#bloc_chapo {
  width:800px;
  text-align:justify;
  margin:auto;
}

.bloc_sommaire {
  border-width:2px;
  border-color:black;
  width:800px;
  height:160px;
  text-align:justify;
  margin:auto;
  margin-top:50;
}

.bloc_bouton {
  border-width:2px;
  border-color:black;
  float:left;
  width:128px;
  height:128px;
  margin:0px;
  margin-top:16px;
  margin-bottom:16px;
  padding:0px;
}

.bloc_bouton img {
  margin:auto;
}

.bloc_description {
  border-width:2px;
  border-color:black;
  float:right;
  margin:0px;
  margin-top:16px;
  margin-bottom:16px;
  padding:0px;
  width:650px;
}