html,body{
  background-color: rgb(110,200, 290);
}
#corps
  {/*border-style: solid;*/
  /*border-width:1px;*/
  display:block;
  background-color:rgb(110,200, 290);
  float:left;
  width:90%;
}

#corps h1
{text-align:center;
font-size: 1.4em}

#corps h2
{text-align:left;
font-size: 1.2em}