html, body {
    height: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
    background: #F6FBFF;
}

.background {
    position: fixed;
    width: 100%;
    top: 30vh;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.background img {
    width: 100%;
}
@media (max-width: 767px) {
    .background {
        display: none;
    }
}