body,
html {
  padding: 0;
  margin: 0;
  min-height: 100%;
}
html {
  background: #f8f9fa;
}
body {
  max-width: 800px;
  background: #fff;
  margin: 0 auto;
  padding-bottom: 20px;
}
.header {
  background: #4d8cf5;
  position: relative;
  margin: 0;
  padding: 30px 0 40px 0;
  color: #fff;
}
#c {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
}
#triangle {
  width: 100%;
  position: relative;
  top: -50px;
  margin-bottom: -25px;
}
.github-link {
  font-size: 14px;
  color: #555;
  margin-top: 0;
}
.title,
.subtitle,
.github-link,
.hint,
.plugin-title,
.plugins {
  font-family: 'Avenir Next', Avenir, 'Helvetica Neue', Helvetica, 'Franklin Gothic Medium', 'Franklin Gothic',
    'ITC Franklin Gothic', Arial, sans-serif;
  text-align: center;
}
.title {
  font-size: 36px;
  margin-bottom: 10px;
  position: relative;
  z-index: 10;
}
.subtitle {
  font-size: 12px;
  position: relative;
  z-index: 10;
  margin-bottom: 50px;
  text-decoration: underline;
}
.github-link a {
  color: #4d8cf5;
  font-size: 18px;
}
.hint {
  color: #555;
  margin-bottom: 50px;
}
.buttons {
  padding: 0;
  margin: 0;
  list-style: none;
}
.buttons li {
  color: #fff;
  padding: 20px;
  font-size: 20px;
  font-weight: bold;
  position: relative;
  text-align: center;
  cursor: pointer;
}
.buttons li.yellow {
  background: #fec107;
}
.buttons li.red {
  background: #f44236;
}
.buttons li.green {
  background: #2ea54e;
}
#output {
  text-align: center;
  padding: 20px 20px 0;
}