* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  background-color: #fff;
  color: #333;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
}

main {
  max-width: 800px;
  width: 100%;
}

.banner {
  margin-bottom: 20px;
}

.banner img {
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
}

header,
footer {
  width: 100%;
  max-width: 800px;
  text-align: center;
  padding: 20px;
}

header h1 {
  font-size: 2em;
  margin-bottom: 20px;
}

section {
  margin-bottom: 40px;
}

h2 {
  font-size: 1.5em;
  margin-bottom: 10px;
  border-bottom: 1px solid #ccc;
  padding-bottom: 5px;
}

p {
  font-size: 1em;
  margin-bottom: 1em;
  line-height: 1.6;
}

ol {
  margin: 1em 0;
  padding-left: 20px;
}

footer p a {
  color: #333;
  text-decoration: none;
  margin: 0 10px;
}

footer p a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  header h1 {
    font-size: 1.5em;
  }
  h2 {
    font-size: 1.2em;
  }
  p {
    font-size: 0.9em;
  }
  ol li {
    font-size: 0.9em;
  }
}