body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f8f8f8;
  color: #222;
}

header {
  background: #111;
  padding: 12px;
}

nav a {
  color: #fff;
  margin-right: 12px;
  text-decoration: none;
  font-size: 14px;
}

nav a:hover {
  text-decoration: underline;
}

main {
  padding: 20px;
  background: #fff;
  max-width: 1100px;
  margin: auto;
}

h1 {
  font-size: 26px;
  margin-bottom: 10px;
}

h2 {
  font-size: 20px;
  margin-top: 25px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
}

table th,
table td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: left;
}

table th {
  background: #f2f2f2;
}

footer {
  background: #eee;
  padding: 15px;
  text-align: center;
  font-size: 13px;
  margin-top: 30px;
}

img {
  max-width: 100%;
  height: auto;
}