body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    text-align: center;
    padding: 20px;
}

nav {
    text-align: center;
    margin: 20px 0;
}

img {
    display: block;
    margin: 0 auto;
}

iframe {
    display: block;
    margin: 0 auto 20px;
}

h2, h3 {
    text-align: center;
}

p {
    margin: 0 20px;
    line-height: 1.6;
}

table {
    margin: 20px auto;
    border-collapse: collapse;
    width: 80%;
    border: 2px solid #000; /* Add a border to the table */
}

table th, table td {
    padding: 10px;
    text-align: left;
    border: 1px solid #000; /* Add a border to table cells */
}

table th {
    background-color: #f4f4f4;
}

audio {
    display: block;
    margin: 20px auto;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #fff;
    border-top: 1px solid #ccc;
    position: relative;
    bottom: 0;
    width: 100%;
    box-sizing: border-box;
}

hr {
    border: 1px solid #ccc;
    margin: 20px 0;
}