header {
    width: 100%;
    height: 100vh;
    background: url(images/fond01.png) no-repeat 50% 50%;
    background-size: cover;
}

.content {
    width: 90%;
    margin: 4em auto;
    font-size: 20px;
    line-height: 30px;
    text-align: justify;
}

.logo {
    position: fixed;
    float: left;
    margin: 16px 36px;
    font-weight: bold;
    font-size: 24px;
}

#logoTexte {
    text-decoration: none;
    color: #fff;
}



nav {
    position: fixed;
    width: 100%;
}

nav ul {
    list-style: none;
    background: rgba(0, 0, 0, 0);
    overflow: hidden;
    color: #fff;
    padding: 0;
    text-align: center;
    margin: 0;
    transition: 1s;
}

nav.black ul {
    background: #000;
}

nav ul li {
    display: inline-block;
    padding: 20px;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
    font-size: 20px;
}

nav ul li a:hover {
    color: #98FB98;
}

#logoTexte:hover {
    color: #98FB98;
}

.menu-icon {
    width: 100%;
    background: #000;
    text-align: right;
    box-sizing: border-box;
    padding: 15px 24px;
    cursor: pointer;
    color: #fff;
    display: none;
}

@media(max-width: 767px) {
    .logo {
        position: fixed;
        top: 0;
        margin-top: 16px;
    }

    nav ul {
        max-height: 0px;
        background: #000;
    }

    nav.black ul {
        background: #000;
    }

    .showing {
        max-height: 20em;
    }

    nav ul li {
        box-sizing: border-box;
        width: 100%;
        padding: 24px 0;
        text-align: center;
    }

    .menu-icon {
        display: block;
    }
}