body {
    background: #021623;
    color: white;
}

.container {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    align-items: center;
    justify-content: center;
}

.content img {
    width: 520px;
    max-width: 100%;
}