* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f9;
    color: #333;
    padding: 20px;
}

header {
    background: #4CAF50;
    color: white;
    padding: 20px;
    text-align: center;
    border-radius: 8px;
}

h1 {
    font-size: 2.5rem;
}

main {
    max-width: 800px;
    margin: 20px auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

section {
    margin-bottom: 20px;
}

ul {
    list-style: none;
    padding: 0;
}

ul li {
    background: #e8e8e8;
    margin: 5px 0;
    padding: 10px;
    border-radius: 4px;
}

footer {
    text-align: center;
    margin-top: 20px;
    color: #777;
}