html {
  background-image:url(Ressources/Fond_ecran/fond_ecran1.jpg);
}

body {
  font-family: Arial;
  width: 800px;
  height: 650px;
  margin: 200px 300px;
  background-color: white;
  border: 3px solid lightgrey;
  border-radius: 20px;
	-moz-border-radius: 20px;
	-webkit-border-radius: 20px;
}

h1 {
  text-align: center;
  margin: 20px
}

p, h2 {
  margin: 30px 20px;
  line-height: 1.5;
}

#navigation li {
  color: black ;
  margin-bottom: 0px ;
  display: inline
}

#navigation li a {
  padding: 5px 20px ;
  background: rgb(220, 220, 220) ;
  color: black ;
  border: 1px solid rgb(110, 110, 110) ;
  font: Arial ;
  text-align: center ;
  text-decoration: none ;
}
#navigation li a:hover {
  background: rgb(250, 250, 250)