body {
font-family: Arial, sans-serif;
max-width: 900px;
margin: auto;
padding: 20px;
line-height: 1.6;
}

header {
text-align: center;
margin-bottom: 40px;
}

h1 {
margin-bottom: 0;
}

h2 {
border-bottom: 1px solid #ddd;
padding-bottom: 5px;
}