body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    margin: 20px;
}

h1 {
    color: #0056b3;
    text-align: center;
}

p {
    line-height: 1.6;
}

.highlight {
    background-color: yellow;
    font-weight: bold;
}

#main-content {
    border: 1px solid #ccc;
    padding: 15px;
    background-color: #fff;
}