* {
    padding: 0;
    margin: 0;
    text-decoration: none;
    font-family: "Roboto", sans-serif;
    list-style: none;
    user-select: none;
}

:root {
    --bg-color: #0c0c0c;
    --text-color: #fff;
    --main-color: #ffd000;

    --big-font: 6.6rem;
    --p-font: 1rem;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    width: 100vw;
}

header {
    width: 100vw;
    top: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all .50s ease;
}

.invisible {
    display: none;
    width: 42px;
}

.logo img {
    width: 100px;
    height: auto;
}

.navlist {
    display: flex;
}

.navlist a {
    flex-direction: row;
    margin: 0 35px;
    color: var(--text-color);
    font-size: 1rem;
    transition: all .6s ease;
}

.navlist a:hover {
    color: var(--main-color);
}

#pageactuelle {
    color: var(--main-color);
}

.right-content {
    display: flex;
    align-items: center;
    width: 100px;
}

#menu-icon {
    color: var(--text-color);
    font-size: 42px;
    z-index: 10001;
    cursor: pointer;
    margin-left: 25px;
    display: none;
}

.banner {
    width: 100%;
    height: 100vh;
    text-align: center;
    overflow: hidden;
}

.banner .slider {
    position: absolute;
    width: 200px;
    height: 250px;
    top: 40%;
    left: calc(50% - 100px);
    transform-style: preserve-3d;
    transform: perspective(1000px);
    animation: autoRun 40s linear infinite;
}

@keyframes autoRun {
    form {
        transform: perspective(1000px) rotateY(0deg);
    }

    to {
        transform: perspective(1000px) rotateY(360deg);
    }
}

.banner .slider .item {
    position: absolute;
    inset: 0 0 0 0;
    transform:
        rotateY(calc((var(--position) - 1) * (360 / var(--quantity)) * 1deg)) translateZ(550px);
}

.banner .slider .item img {
    width: 180px;
    height: 250px;
    object-fit: cover;
}

@media(max-width: 1370px) {
    .banner .slider {
        transform: perspective(1600px);
    }

    @keyframes autoRun {
        form {
            transform: perspective(1600px) rotateY(0deg);
        }

        to {
            transform: perspective(1600px) rotateY(360deg);
        }
    }
}

@media(max-width: 950px) {
    #menu-icon {
        display: block;
    }

    .invisible{
        display: block;
    }

    .navlist {
        position: absolute;
        width: 100%;
        height: 100vh;
        z-index: 1000;
        padding: 100px 100px;
        top: 0;
        right: 0;
        bottom: 0;
        left: 100%;
        display: flex;
        flex-direction: column;
        backdrop-filter: blur(32px);
        transition: all .6s ease-in-out;
    }

    .navlist a {
        display: block;
        padding: 0;
        margin: 0px 0px 25px 0px;
        font-size: 1.7rem;
    }

    .navlist.open {
        left: 0;
    }

    .banner .slider {
        width: 210px;
        height: 280px;
        transform: perspective(1800px);
    }

    @keyframes autoRun {
        form {
            transform: perspective(1800px) rotateY(0deg);
        }

        to {
            transform: perspective(1800px) rotateY(360deg);
        }
    }

    .banner .slider .item img {
        width: 210px;
        height: 280px;
        object-fit: cover;
    }
}

@media(max-width: 570px) {

    .banner .slider {
        width: 300px;
        height: 390px;
        transform: perspective(1800px);
        top: 40%;
    }

    @keyframes autoRun {
        form {
            transform: perspective(1800px) rotateY(0deg);
        }

        to {
            transform: perspective(1800px) rotateY(360deg);
        }
    }

    .banner .slider .item img {
        width: 300px;
        height: 390px;
        object-fit: cover;
    }

}