body {
  margin-left: 80;
}


.entete {

  margin-left: 50px;

}


h1 {

  font-family: Helvetica, Arial, Arial, Verdana, sans-serif;

  font-size: 24px;

  margin-left: 50px;
}

.bigToSmall2 { width: 170px; height: 50px;

}

.conteneur_thumbs{

      width: 1060px;
 
      margin-top: 10 auto; 
      flex-wrap: wrap; 
      flex-direction: row;
      align-items: flex-start;
    }



@media (min-width: 900px) {
      .conteneur_thumbs {
              display: flex;
              justify-content: space-between; 
      }

}

.sous_cont_thumbs_gauche{
    
      width: 450px;
      display: flex;
      justify-content: center;  
      margin: 40px 40px 40px 40px; 
      flex-wrap: wrap; 
      flex-direction: column;
    }

.sous_cont_thumbs_droit{
      
      width: 450px;
      display: flex;
      justify-content: center;  
      margin: 40px 40px 40px 40px; 
      flex-wrap: wrap; 
      flex-direction: column;
    }