body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 20px 0;
    text-align: center;
}

h1, h2 {
    margin: 0;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 40px;
}

h2 {
    color: #4CAF50;
    border-bottom: 2px solid #4CAF50;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.course ul {
    list-style-type: none;
    padding: 0;
}

.course ul li {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    padding: 10px;
    margin-bottom: 10px;
}

footer {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}