/* Center the main header */
h1 {
    text-align: center;
    font-size: 2.5rem;
    letter-spacing: 1px;
}
h2 {
    color: #6c5ce7;
    border-bottom: 2px solid #1abc9c;
    padding-bottom: 10px;
    font-size: 2rem;
    text-align: center;
}
/* Center the site navigation */
nav {
    text-align: center;
    background-color: #040a5f;
    padding: 10px 0;
    position: sticky;
    top: 0;
}
/* center the footer information */
footer {
    text-align: center;
    padding: 40px 20px;
    font-size: 0.9rem;
    color: #7f8c8d;
}
body {
    background-color: #f0f2f5;
    color: #2d3436;
    font-family: 'Segoe UI' Arial, sans-serif;
    line-height: 1.6;
    margin: 10px;
    padding: 0;
}
header {
    background: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
    color: white;
    padding: 2rem 1rem;
    text-align: center;
    border-bottom: 8px solid #fdcb6e;
}
/* Main Content Area */
main {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
    background: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 1);
    border-radius: 8px;
}
img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
}
video {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 600px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: #f2f2f2;
}