@media screen and (max-width: 660px){
    nav{
        flex-direction: column;
        position: relative;
        height: 70px;
        transition: all 0.5s ;
    }
    .gauche{
        flex-direction: column;
    }
    .droite{
        flex-direction: column;
        padding-bottom: 20px;
    }
    #open-menu{
        display: block !important;
        position: absolute;
        top: 20px;
        right: 20px;
        cursor: pointer;
        font-size: 30px;
        opacity: 1;
    }

    #close-menu{
        display: block !important;
        position: absolute;
        top: 20px;
        right: -100%;
        opacity: 0;
        cursor: pointer;
        font-size: 30px;
    }

    nav a{
        transition: 0.5s;
        opacity: 0;
    }

    .about img{
        display: none;
    }

    .titre_sect h2{
        margin-top: -10px !important;
        margin-bottom: -10px !important;
    }
}

@media screen and (max-width: 750px) {
    #contact{
        display: flex !important;
        flex-direction: column;
    }

    #contact .box{
        max-height: fit-content;
        padding-bottom: 20px;
        margin-bottom: 20px;
    }

    #contact .box5{
        padding: 0;
    }

    #contact .box5 .img{
        width: 100%;
        height: 190px;
    }
}

@media screen and (max-width: 480px) {
    .content-about{
        margin-top: 20px;
    }
}