html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    position: relative;
}

.bg {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: #0c2858 url('bg.jpg') no-repeat center bottom;
    background-size: 100% auto;
    z-index: 1;
}

.container {
    position: absolute;
    top: 20%;
    left: 20px;
    right: 20px;
}

.container img {
    display: block;
    margin: 0 auto;
    max-width: 560px;
    height: auto;
    z-index: 2;
    position: relative;
    width: 100%;
}