@media screen and (max-width: 640px) {

    #bottom-header {

        width: 100% !important;
    }

    #nav-main > * {
        margin-left: 5px !important;
        margin-right: 5px !important;
        overflow-y: scroll !important;
    }

    #nav-main {
        width: 100% !important;
        padding-right: 0 !important;
        overflow: hidden !important;
    }

    #chapeau > * {
        margin: 0 10px !important;
    }

    #chapeau {
        width: 100% !important;
        height: 80px !important;
    }

    #txt-chapeau {
        max-width: 310px !important;
        height: auto !important;
    }


    #big-logo {
        width: 100% !important;
        margin: 0 auto !important;
    }

    #logo {
        background-repeat: no-repeat !important;
        background-size: 120% 80px !important;
        background-position-x: inherit !important;
        background-position-y: inherit !important;
        height: 120px !important;
    }

    #appel_3669 {
        bottom: 0 !important;
    }

    #bottom-header {
        width: 100% !important;
        height: auto !important;
    }

    #form-search > *{
        margin: 5px !important;
    }
    #form-search {
        width: 100% !important;
        height: auto !important;
    }

    #continent ul li a {
        font-size: 1.2rem !important;
        padding: 8px !important;
    }

    #ctn-main {
        width: 100% !important;
    }

    #clock {
        display: none !important;
    }


    #nav-left {
        width: 100% !important;
        display: none;
    }

    #nav-left div:not(.rub-nav-left) {
        display: none !important;

    }

    #nav-left ul li a {

        font-size: 1.2rem !important;
        line-height: initial !important;
    }

    #burgerButton {
        display: block !important;
        border: none;
        width: 100%;
        padding: 15px;
        margin: 10px 0;
        font-weight: bolder;
        font-size: 1.5rem;
        font-family: 'Arial', 'verdana', sans-serif;
        color: #333;
    }

    .menuTextBurger {
        display: inline-block;
        vertical-align: middle;
    }

    .menuButtonBurger {
        display: inline-block;
        cursor: pointer;
        position: relative;
        vertical-align: middle;
        float: right;
    }

    .menuButtonBurger div {
        width: 35px;
        height: 5px;
        background-color: black;
        margin: 6px 0;
    }

}