body{
     background-color: blue;
     padding: 5px 25px;
     font-size: 32px;/*ligne5*/;
     margin: 0;
     color: white;
}
h1{
   font-size: 60px;
   color: white;
}  
      
        .topnav {
            background-color: blue;
            color: white;
            overflow: hidden;
            width: 100%;
            position: fixed;
            top: 0;
            z-index: 3;
	          padding:0
        }
 
        .topnav a {
            float: left;
            display: block;
            color: white;
            text-align: center;
            padding: 14px 16px;
            text-decoration: none;
            font-size: 20px;
            margin-bottom:2px;
        }   
        
        a {
          color:white;
          }