html, body {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    height: 100%;
}

body {
    background: url(img/fundo04.png);
    background-size: cover;
    background-position: top center;
    background-repeat: no-repeat;
    margin-top: -20px;
    font-family: Helvetica, Arial, sans-serif;
}

body > main {
  flex: 1;
}

*{
    font-family: "Open Sans", sans-serif;
}