body {
  font-family: "Times New Roman", serif;
  background-color: #c0c0c0;
  color: #000000;
  margin: 0;
  padding: 20px;
  line-height: 1.4;
  font-size: 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  text-align: center;
  margin-bottom: 30px;
  border-bottom: 3px solid #000000;
  padding-bottom: 10px;
}

header h1 {
  font-size: 3em;
  margin: 0;
  font-weight: bold;
}

header h1 code {
  background-color: #ffffff;
  border: 2px inset #c0c0c0;
  padding: 10px 20px;
  font-family: "Courier New", monospace;
  font-size: 1em;
  font-weight: normal;
}

main {
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
  background-color: #ffffff;
  border: 2px inset #c0c0c0;
  padding: 20px;
  margin-bottom: 30px;
  flex: 1;
}

main p {
  font-size: 16px;
  margin-bottom: 15px;
  text-align: left;
}

footer {
  text-align: center;
  font-size: 12px;
  color: #666666;
  border-top: 1px solid #000000;
  padding-top: 10px;
  margin-top: auto;
}

footer hr {
  border: none;
  height: 1px;
  background-color: #000000;
  margin-bottom: 10px;
}

a {
  color: #0000ee;
  text-decoration: underline;
}

a:visited {
  color: #551a8b;
}

a:hover {
  background-color: #ffff00;
}