body {
    font-family: arial, helvetica, sans-serif;
    margin: 40px;
    margin-top: 10px;
    text-align: center;
}

h1 {
    font-size: 110%;
}

h2 {
    margin-top: 0;
}

.footer {
    border-top: 1px solid gray;
}

iframe {
    display: block;
    border: 1px solid gray;
    width: 590px;
    height: 530px;
}

.queries {
    font-size: 90%;
}

table {
    width: 1200;
    margin-left: auto;
    margin-right: auto;
}

.navigation  {
    margin-bottom: 30px;
}