body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

header {
    background-color: #0056b3;
    color: white;
    padding: 20px;
    text-align: center;
    width: 100%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

main {
    background-color: white;
    margin: 20px 0;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    max-width: 800px;
    text-align: center;
}

h1 {
    color: #0056b3;
    margin-bottom: 20px;
}

p {
    line-height: 1.6;
    margin-bottom: 10px;
}

ul {
    list-style-type: none;
    padding: 0;
    margin: 20px 0;
}

li {
    background-color: #e9ecef;
    margin: 5px 0;
    padding: 10px;
    border-left: 5px solid #007bff;
    text-align: left;
}

img {
    margin-top: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 5px;
}

footer {
    margin-top: auto;
    padding: 10px;
    color: #666;
    font-size: 0.9em;
}