body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: #333;
}
header {
    background-color: #007bff;
    color: #fff;
    text-align: center;
    padding: 20px;
}
.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 0 0;
}
h2 {
    color: #007bff;
}
h4 {
    color: #555;
}
p {
    line-height: 1.6;
}
img {
    height: 200px;
    margin-bottom: 10px;
}
ol, ul {
    padding-left: 20px;
}