body
{ 
  width: 90%;
  margin-left: auto;
  margin-right: auto;
  background-color: rgb(255, 255, 255);
  font-family: Arial, "Times New Roman", sans-serif;
  background-image: url("green-marble.jpg");
  background-attachment: fixed;
}

a
{ 
  color: #000099;
  text-decoration: none;
}

a:hover
{
  text-decoration: underline;
}

a:visited
{ 
  color: #990099;
}

#grenouille
{ 
  background: url("treefrog-tiny.jpg") no-repeat;
  width: 240px;
  height: 180px;
  position: absolute;
  top: 0px;
  left: 0px;
}

#en_tete
{ 
  height: 180px;
  margin-left: 260px;
}

#pied
{ 
  margin-top: 30px;
  padding: 5px;
  text-align: center;
  font-size: 80%;
}