body
{
  background-color: white;
  color: black;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  margin: 10%;
}

a, a:visited, a:hover, a:active
{
  color: blue;
}

pre
{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 60%;
  line-height: 1.6;
  border: 1px solid #CCCCCC;
  padding: 1em;
  overflow-y: auto;
  background-color: #F9F9F9;
}

button
{
  cursor: pointer;
  appearance: auto;
  -webkit-appearance: push-button;
  font-size: 0.9em;
  padding: 0.2em 1em;
  border: 1px solid #A1A1A1;
  border-radius: 0.3em;
  background-color: #E5E5E5;
  color: black;
}

button + span
{
  font-size: 0.9em;
}

.transparent
{
  opacity: 0;
}

.fade-in
{
  opacity: 1;
  transition: opacity 0.5s ease;
}

.fade-out
{
  opacity: 0;
  transition: opacity 0.5s ease;
}

.hidden
{
  display: none;
}