body {
  font-family: monospace;
  font-size: 16px;
  background-color: #ffffff;
  padding: 20px;
  max-width: 800px;
  margin: auto;
  border: 1px solid #ccc;
}


pre {
  background-color: #eeeeee;
  border: 1px solid #ccc;
  padding: 15px;
  white-space: pre-wrap;
}

code {
  background-color: #eee;
  padding: 2px 6px;
  display: inline-block;
}

.center {
  text-align: center;
}

footer {
  background-color: #333;
  color: #fff;
  text-align: center;
  padding: 10px 0;
  margin-top: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1em;
}

th, td {
  padding: 6px 12px;
  border: 1px solid #999;
  text-align: left;
}

.image-container {
  max-width: 100%;
  margin: 0 auto;
  text-align: center;
}

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

a {
  padding: 8px 12px;
  display: inline-block;
  min-width: 10px;
  min-height: 10px;
}

a:link, a:visited {
  color: #0066cc;
  text-decoration: underline;
}


h1, h2, h3, h4 {
  text-align: center;
  font-weight: bold;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

@media (max-width: 600px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.4rem; }
  h3 { font-size: 1.2rem; }
  h4 { font-size: 0.95rem; }
}