html{
font-family:Verdana,Arial,Helvetica,sans-serif;
background-image:url('images/nuages.jpg');
background-repeat: repeat-x;
}

.conteneur
{height: 98%; width: 98%; margin-top: 300; border-style: solid; padding: 10px; background-image: url('../images/nuages.jpg'); background-repeat: no-repeat; background-position: left top;}