body.slide1 .btn_chapitre,
body.slide1 .btn_en_avant,
body.slide1 .btn_cartel,
body.slide1 .interface_fond_blanc {
    display: block;
}

/* utilisateur */

.a_gauche.slide1 .btn_chapitre {
    display: block;
}


.introduction.swiper-slide,
.fiche.swiper-slide,
.interface_fond_blanc {
    background: rgba(255, 255, 255, .0);
}

/*interface*/

#polarisation .btn_cartel {
    display: none;
}

#polarisation .swiper-slide {
    background: #ffa1c5;
}

#polarisation .accueil-fond {
    background: url(1.png) center center no-repeat #ffa1c5;
    background-size: cover;
}

div.swiper-container.polarisation {
    background-color: #eee;
}

div.swiper-container.polarisation-sub1 {
    top: 66px;

    width: 734px;
    height: 653px;
    margin-right: auto;
    margin-left: auto;
}

div.swiper-slide.polarisation-sub1 {
    font-size: 18px;

    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    height: 2732px;
    padding-right: 0;
}