html, body {
    height: 100%;
    margin: 0;
    padding-left: 20px;
    padding-right: 20px;
}

#wrapper {
    min-height: 70%; 
    background-size: contain;
    background-repeat: no-repeat;
    background-image: url(../img/manihi.png);
    background-position: center;
    transform: translateY(10%);
}