@media screen and (max-width: 679px) {
    #screen {
        width: auto
        }
    header {
        height: auto;
        background: #4B92DB;
        margin-bottom: 0
        }
    header .header_right {
        float: left;
        margin-top: 15px;
        width: 100%
        }
    header .topnav {
        float: left;
        margin: 15px 0 0 0;
        width: 100%;
        text-align: center
        }
    header .header_right {
        height: auto
        }
    header .header_right .search_reseaux {
        float: none;
        margin: 0 auto;
        padding-top: 25px
        }
    header .header_right .bloc-reseaux-sociaux {
        margin-top: 5px
        }
    header .logo {
        width: 100%;
        text-align: center
        }
    #big-content {
        width: 100%
        }
    .menu-horiz {
        height: auto;
        padding: 0
        }
    #coincoupe {
        display: none
        }
    .main_nav {
        background: #4B92DB;
        height: auto;
        padding-left: 0;
        width: 100%
        }
    .main_nav li a {
        z-index: 0
        }
    .main_nav li .sub_nav {
        background: #FFF;
        border: 1px ridge #448EC1;
        z-index: 3
        }
    .sub_nav a {
        color: #448EC1;
        text-align: center;
        z-index: 3
        }
    .sub_nav a:hover {
        color: #fff
        }
    .bloc_left {
        width: 100%
        }
    .halfonresize {
        display: none
        }
    .bloc_left div:nth-child(1) {
        display: none
        }
    .central_section {
        width: 98%;
        margin: 0 1%
        }
    .nbs-flexisel-inner {
        height: auto !important
        }
    .bloc-actualites {
        width: 100%
        }
    .floatright {
        float: left
        }
    .slideshow {
        width: 100%
        }
    .content {
        display: table
        }
    .ligne-actu {
        padding: 5px
        }
    .ligne-actu img {
        display: none
        }
    .details-actu {
        padding-left: 5px
        }
    .more {
        float: left
        }
    .right_section {
        width: 100%;
        margin-left: 5px
        }
    .contactform {
        width: 100%
        }
    .sidebarcontact {
        width: 100%;
        margin-left: 0
        }
    }