/*
.mainprj {
    font-family: "arial", sans-serif;
    text-align: center;
}
*/

#slider {
    position: relative;
    width: 100%;
    margin: auto;
    display: flex;
    align-items: center;
}

#slider img {
    width: 100%;
}

#precedent, #suivant {
    cursor: pointer;
    transition: opacity 0.3s ease;
    opacity: 0;
    position: absolute;
    font-size: 80px;
    color: #949494;
  /*  background-colo#E5E5E5r: #5b5a5c50;*/
}

#precedent {
    left: 0;
}

#suivant {
    right: 0;
}

#slider:hover #precedent,
#slider:hover #suivant {
    opacity: 1;
}

@media (max-width: 920px){

    #slider {
        padding-bottom: 25px;
    }
    #precedent, #suivant {
        opacity: 1;
        font-size: 50px;
    }

}