@import url('https://fonts.googleapis.com/css2?family=Lato&display=swap');



body{
    font-family:'Lato',sans-serif;
    background-color: #141414;
    padding:0;
    margin:1;
    color: #fff;
}


body.page{
    margin: 20px 80px;
}

/* Barre de navigation */
nav{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    position:sticky;
    top:0;
    background-color: #141414;
    padding:10px 0px;
}

nav .onglets{
display:flex;
flex-wrap:wrap;
margin-top:5px;

}
nav .onglets a{
margin-right:20px;
cursor:pointer;
}




.navbar ul li{
   width:120px;
   height:40px;
   display:inline-block;
   background-color:blanchedalmond;
   line-height: 40px;
   text-align: center;
   position: relative;
   position: sticky;
   top:0;
   style="width:30px;height:40px"

}
.navbar ul li a{
   color:black;
   text-decoration: none;
   font-family:century gothic;
   display:block;
   position:sticky;
}
.navbar ul li:hover{
   background-color:palegreen;
   transition:0.5s;
}
.navbar ul li ul{
   position:absolute;
}  
 .navbar ul li ul li{
   border-top:10px solid white;
   display:none;
   position:sticky;
}
.navbar ul li:hover ul li{
   display:block;
   position:sticky;
}




/* Positionnement de l'image dans la page */
.special{
position:absolute;
bottom: 8px;
right:8px;
}



.box{

   padding:16px 32px 32px 48px;
}


<style>
.my-title{
background-color:red;
}
</style>


/* Fin de la Barre de navigation */

/* Fond écran ( header ) */
header{
    margin-top: 1px;
    <img src="C:\Users\paboi\Favorites\Links\RACN2\0_Index\Accueil.jpg">
    background-repeat:no-repeat;
    background-position:center;
    background-size:200px 200px;
}

/* Fin header */