body {
    background: #001d34;
    background-position: -500px 0;
    background-size: cover;
}
.container {
    display: flex;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    flex-direction: row;
    height: 100%;
    align-items: center;
    justify-content: center;
}
.logo {
    text-align:  center;
}
img {
    width: 80%;
}
@media(min-width: 768px) {
    body {
        background-position: 0 0;
    }
}
@media(min-width: 1200px) {
    img {
        width: 650px;
    }
}