html,body{
    height: 100%;
}
body{
    background-image: url(../img/Fondo.png);
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
}
body{
    margin: 0;
    padding: 0;
    font-family: exo,sans-serif;
}
main{
    height: 100%;
    width: 100%;
}
h3,h6{
    text-align: center;
}