body {
  background: url('gris_190.jpg');
  color: #80679d;
  margin: 0;
  padding: 0;
}

#contenu_principal {
  margin: 5% auto 5% auto;
  padding: 15px;
  height: 80%;
  width: 70%;
  background-color: #ffffff;
  border: 1px solid #cccccc;
  overflow: auto;
  -moz-border-radius: 2%;
  -webkit-border-radius: 12px;
  border-radius: 2%;
  -moz-box-shadow: 1px 1px 13px #999999;
  -webkit-box-shadow: 1px 1px 13px #999999;
  box-shadow: 1px 1px 13px #999999;
}

h1 {
  background: url('gris_190.jpg');
  color: #a7b2e5;
  text-align: center;
  margin: 0;
  padding-top: 0;
  padding-left: 3px;
  border: 1px solid #cccccc;
  -moz-border-radius-topleft: 1%;
  -moz-border-radius-topright: 1%;
  -webkit-border-top-left-radius: 6px;
  -webkit-border-top-right-radius: 6px;
  border-top-left-radius: 2%;
  border-top-right-radius: 2%;
}

h2 {
  color: #9978e5;
}

ul {
  padding-left: 28px;
  list-style-type: square;
}

a {
  color: #573ae5;
  text-decoration: none;
  font-weight: bold;
}

a:visited {
  color: #80427b
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

p {
  padding: 0 5px 0 5px;
}

p span {
  text-decoration: underline;
}

p img {
  padding-left: 18px;
}