html { 
  margin:0;
  padding:0;
  background: url(fond.jpg) no-repeat center fixed; 
  -webkit-background-size: cover; 
  background-size: cover; 
  background-color:: #000000; 
  font-family: Verdana, Geneva, Arial; 
  font-size : 24px;
  color : #FFFFFF; 
}