body {
    font-family: Arial, sans-serif;
    background-color: #eef2f5;
    color: #333333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #2c3e50;
    color: #ffffff;
    text-align: center;
    padding: 30px 10px;
}

header h1 {
    margin: 0;
    font-size: 2.2rem;
}

header p {
    margin-top: 5px;
    color: #bdc3c7;
}

main {
    max-width: 700px;
    margin: 20px auto;
    padding: 0 15px;
}

.card {
    background-color: #ffffff;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.card h2 {
    color: #2c3e50;
    margin-top: 0;
    border-bottom: 2px solid #3498db;
    padding-bottom: 5px;
}

ul {
    line-height: 1.8;
}

footer {
    text-align: center;
    padding: 15px;
    background-color: #2c3e50;
    color: #ffffff;
    margin-top: 30px;
}