body {
    background-image: url(fundo.png);
    margin: 0px;
    padding: 0px;
}

div.main {
    display: block;
    position: relative;
    background-image: url(main.png);
    width: 615px;
    height: 415px;
    margin: auto;
    margin-top: 80px;
    text-align: center;
}