#entete a{
  color:#4488BB;
}
a{
  text-decoration:none;
  color:#00F;
}
a:hover{
  text-decoration:underline;
  color:#00F;
}
#page{
  background-color:white;
}
#entete{
  clear:right;
}
#contenu{
  margin:5em 2em 5em 16em; /* 16em = largeur nav + padding left et right */
}
#contenu h2{
  margin-left:0;
}
#nav{
  position:relative;
  width:14em;
  float:left;
  margin:2em 0em 2em 1em;
}
#nav img{
  width:100%;
}
#menu{
  position:absolute;
  width:100%;
  font-size:1.5em;
  margin-top:15%;
}
#menu ul{
  list-style:none;
  width:100%;
  padding:0;
  margin:auto;
}
#menu ul li{
  padding:0;
  width:100%;
  line-height:1.5em;
  text-align:center;
}
#menu a{
  display:inline-block;
  text-decoration:none;
  color:#069;
  width:70%;
  border:1px solid transparent;
}
#menu a:hover{
  color:#00F;
  background-color:#E1E4F2;
  border:1px solid #B0B0FF;
}
.detail{
  margin:2em auto;
  text-align:justify;
}
.detail p{
  line-height:1.2em;
  margin-bottom:0;
}
.detail a{
  font-size:0.9em;
  font-style:italic;
  color:#00F;
  text-decoration:none;
}
.detail a:after {
  content: "\0000a0[\2197]";
}
#validation{
  position:absolute;
  width:20em;
  margin:2em;
  bottom:0;
}