.container{
    width: 100%;
    height: 100%;
    background: url('../images/back.png') no-repeat center center;
    background-size: 100% 100%;
    overflow: hidden;
    .logo-time{
        width: 80%;
        margin: 170px auto 0;
    }
    .nav-cont{
        margin-top: 50px;
        div{
            width: 50%;
            img{
                width: 75%;
                margin: 0 auto;
            }
        }
    }
}