@media(max-width: 500px) {
    .burger {
        display: block;
    }
.symbole {
    position: fixed;
    top: 0;
}
nav ul {
    max-height: 0px;
    background: #000;
}
.menu {
    max-height: 20em;
}
nav ul i {
    width: 100%;
    padding: 24px 0;
}
}