body {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    line-height: 1.5
}

footer {
    background-color: lightblue;
    margin-top: 75px;
    padding: 5px
}

h1 {
    margin-top: 75px;
}

h2 {
    margin-top: 40px;
}

table, td, th {
    border: 1pt solid grey;
    border-collapse:collapse;
}

td, th {
    padding-left: 5px;
    padding-right: 5px;
    text-align: left;
}

.cCode {
    background-color:rgb(219, 225, 232);
    border-radius: 5px;
    padding: 10px;
}

@media (min-width: 721px) {
    footer, h1, h2, h3, p, table, ul {
        margin-left: 25%;
        margin-right: 25%
    }

    img {
        display: block;
        margin: auto;
        width: 50%;
    }

}