body{
    background:
        linear-gradient(rgba(255,255,255,0.35), rgba(255,255,255,0.35)),
        url("../images/BACKGROUND0.png");

    background-size:cover;
    background-position:center;
    background-repeat:no-repeat;
}
/* Toutes les sections Hero */

.hero{
    background:rgba(255,255,255,0.35);
    backdrop-filter:blur(6px);
    -webkit-backdrop-filter:blur(6px);
}
header{
    position:relative;
    z-index:10000;
}

.menu-box{
    display:none;
    position:absolute;
    top:80px;
    left:20px;
    background:white;
    padding:20px;
    border-radius:10px;
    box-shadow:0 0 10px #ddd;
    z-index:9999;
}