body {
  background-color: #fafafa;
  color: #222;
  font-family: verdana, arial, sans-serif;
}
#content {
  margin: 1.4rem;
}
#header {
  font-weight: bold;
  font-size: 28px;
  margin-bottom: 1rem;
}
textarea#letters {
  font-size: 24px;
  font-family: 'Courier New', courier, fixed;
  display: block;
  margin-bottom: 0.4rem;
}
button {
  font-size: 16px;
  padding: 4px 8px;
}
#results {
  margin-top: 1rem;
  display: none;
}
#results .label {
  font-weight: 18px;
  font-weight: bold;
}
#results ul {
  font-family: 'Courier New', courier, fixed;
}
#mask {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(0,0,0,0.7);
}
#wait-wrap {
  margin: 8rem auto 8rem auto;
  width: 400px;
  height: 100px;
  line-height: 100px;
  vertical-align: center;
  text-align: center;
  background-color: #eee;
  color: green;
  font-style: italic;
  border: 0px solid transparent;
  border-radius: 8px;
}
body.ready #mask {
  display: none;
}
body.results-in #results {
  display: block;
}