app.css

  body {

    font-size: 10pt;
    background-image: linear-gradient(rgba(181, 173, 185, 0.4), rgba(89, 0, 255, 0.2));
    font-family: 'ZCOOL QingKe HuangYou', cursive Arial;
}

.jumbotron {
  background-image: linear-gradient(rgba(122, 70, 165, 0.4), rgba(100, 76, 145, 0.2))
}

pre {
  font-size: 6pt;
}

#canvas-container {
  margin-bottom: 20px;
  background: transparent;
}

label p {
  font-size: 1.5em;
  font-weight: 600;
  margin-top: 0.2em;
}

#errors {
  font-size: 2em;
  position: fixed;
  display: none;
  background: rgba(255, 0, 0, 0.2);
  border-radius: 2%;
  padding: 10px;
}

#confirm {
  font-size: 2em;
  position: fixed;
  display: none;
  background: rgba(90, 25, 194, 0.2);
  border-radius: 2%;
  padding: 10px;
}