main {
    padding-top: 56px;
}
footer {
    background-color: #121212;
}
footer .bloc_logo .bg {
    position: relative;
    overflow: hidden;
    max-width: 270px;
    margin: 0 auto;
    padding: 35px;
}
footer .bloc_logo .bg:before {
    content: "";
    position: absolute;
    top: -28%;
    left: 50%;
    width: 270px;
    height: 270px;
    background: #5a9eaa;
    border-radius: 50%;
    transform: translate(-50%,-50%);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}
footer .bloc_logo .bg a {
    position: relative;
    z-index: 10;
}
footer a {
    color: #fff;
}
footer .bloc_logo .logo img {
    margin: auto;
    width: 90px;
    background: #000;
    display: block;
    border-radius: 0;
}
footer .nav-footer {
    padding: 120px 0 100px;
}