.rendez-vous-docto {
    opacity: 0;
    -webkit-transform: translateY(30px);
    -ms-transform: translateY(30px);
    transform: translateY(30px);
    -webkit-transition: opacity 1s ease, -webkit-transform 1s ease;
    transition: opacity 1s ease, -webkit-transform 1s ease;
    -o-transition: opacity 1s ease, transform 1s ease;
    transition: opacity 1s ease, transform 1s ease;
    transition: opacity 1s ease, transform 1s ease, -webkit-transform 1s ease;
}

.rendez-vous-docto.visible {
    opacity: 1;
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
}