#ArrierePlan{
    /* L'arrièreplan du header */
    height: 330px;
    background-image: url("../images/landscape/kaisereggackground.jpg");
    background-size: cover;
    background-repeat: no-repeat;
    background-position: top;

}
#Image{
    /* L'image de moi et mon frère */
    height: 600px;
    background-image: url("../images/framebrothers.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
@media screen and (max-width: 800px){
    #ArrierePlan{ /* Changement d'arrière plan en portrait */
      background-image: url("../images/landscape/gantrischgebiet-hochformat.jpg");
      background-position: center;
      height: 600px;
      background-size: cover;

    }
}