@media screen and (max-width: 840px) {

    .nav-menu {
        position: relative;
    }

    .nav-menu :hover{
        cursor: pointer;
    }

    .nav-menu > div {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        height: 70px;
        width: 70px;
        padding: 15px;
    }

    .nav-menu > div > span {
        height: 14px;
        width: 70px;
        background-color: #335daa;
    }

    .nav-menu > input {
        display: block;
        position: absolute;
        width: 100px;
        height: 100px;
        margin: 0;
        opacity: 0;
        top: 0;
    }

    .checked > div > span {
        background-color: red;
    }

    .checked > div >span:nth-child(1) {
        transform: translateY(28px) rotate(45deg);
        transform-origin: 50% 50%;
        animation-duration: 3s;
    }

    .checked > div >span:nth-child(2) {
        display: none;
    }

    .checked > div >span:nth-child(3) {
        transform: translateY(-28px) rotate(-45deg);
        transform-origin: 50% 50%;
    }


    .nav-menu > ul {
        display: none;
    }

    .nav-menu.checked > ul {
        position: absolute;
        top: 100px;
        right: 0;
        display: flex;
        width: 100vw;
        height: calc(100vh - 100px);
        flex-direction: column;
        align-items: center;
        justify-content: space-around;
        background-color: white;
    }

    .nav-menu.checked > ul > li,
    .nav-menu.checked > ul > li > a {
        height: 100%;
        width: 100%;
        padding: 0;
        font-size: 1.3em;
    }

    .nav-menu.checked > ul > li > a {
        border: 1px solid rgb(128, 128, 128, 0.3);
    }

    .header-nav.bg-nav-mobile {
        background-color: white;
    }

    .secret-reussite > p {
        text-align: center;
    }

    .a-propos-div-img {
        display: none;
    }

    .a-propos-div-img-talent {
        display: none;
    }

    .section-a-propos > div > div {
        width: 100%;
    }

    .secret-reussite > div {
        width: auto;
    }
}