header {
  padding-bottom: 10px;
}

nav {
  margin-bottom: 0;
}

main {
  padding-top: 10px;
  padding-bottom: 10px;
}

footer {
  padding-top: 10px;
}

article {
  font-size: 19px;
  text-align: justify;
}

pre {
  max-width: 100%;
}

pre code {
  white-space: pre;
  overflow: auto;
  max-width: 100%;
}