* {
  box-sizing: border-box;
  font-family: 'Ubuntu mono', Consolas, "Andale Mono WT", "Andale Mono", "Lucida Console", "Lucida Sans Typewriter", "DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Liberation Mono", "Nimbus Mono L", Monaco, "Courier New", Courier, monospace;
  font-size: 18px;
}

html {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
}

body > *  {
  margin: 8px 0;
}

textarea {
  height: 30vh;
  width: 100%;
  padding: 20px;
  line-height: 24px;
}

#sample {
  height: 10vh;
}

#error {
  background: rgb(255, 205, 210);
  padding: 12px;
}

#error:empty {
  display: none;
}

#output .token:hover,
.debug .token {
  outline: 1px solid blue;
  cursor: none;
}

#output .token:hover:after {
  content: attr(class);
  font-size: 12px;
  position: absolute;
  background: #FFF9C4;
  z-index: 0;
  color: black;
  font-weight: bold;
  padding: 2px 4px;
  border-radius: 2px;
  margin-left: 12px;
  margin-top: -12px;
}