body {
  margin: 0px; 
  background-color: lightgrey;
  color: #333;
  font-family: 'ubuntu',Verdana,Tahoma,sans-serif;
  font-size: 16px;
  /*background-image: url(bg_ubuntu.png);*/
  /*background-color: #7a6143;*/
  background-color: #c9d7ce;
  }
#contenant {
  display: flex;
  min-height: 100vh;
  }
#contenu {
  border: 0px solid red;
  margin: auto;
  width: 800px;
  height: 608px;
  padding: 0px;
  }
#corps{
  border: 2px solid dimgrey;
  width: 760px;
  height: 526px;
  padding: 20px;
  background-color: whitesmoke;
  border-radius: 5px;
  box-shadow: 8px 8px 12px #bbb; 
  background-image: url("bg.jpg");
  }
#signature {
  border: 0px solid red;
  padding: 10px 0px 10px 10px;
  text-align: right;
  font-weight: bold;
  }
#signature a {
  color: #09c;
  text-decoration: none;
  }
#signature a:hover {
  color: #0BE;
  }