html, body, #container {
  height: 100%;
}

html * {
  box-sizing: border-box;
}

body {
  padding: 0;
  margin: 0;
  color: #4c4f4f;
  font: normal normal 16px/1.6 "Source Sans Pro", Arial, "Helvetica Neue", Helvetica, sans-serif;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

.controls, .preview, .export {
  padding: 20px;
  float: left;
  height: 100%;
  overflow: auto;
}

.controls {
  color: #34495e;
  background-color: #f4f5f8;
  width: 20%;
}

.controls h4 {
  border-bottom: 1px solid #eee;
  margin: 0 0 15px;
  padding-bottom: 5px;
}

.controls label {
  font-weight: bold;
  display: block;
  margin-bottom: 5px;
}

.controls .form {
  margin-bottom: 15px;
}

.controls button {
  cursor: pointer;
  float: right;
  margin-top: -56px;
  background: #008cba;
  color: white;
  padding: 8px 10px;
  border: 0;
  border-radius: 3px;
}

.controls button:hover {
  opacity: .8;
}

.controls button:focus {
  outline: none;
}

.controls select,
.controls textarea,
.controls input[type="number"],
.controls input[type="text"] {
  display: block;
  width: 100%;
  padding: 5px;
  border: 1px solid #eee;
}

.controls input[type="checkbox"] {
  top: -5px;
}

.preview {
  overflow: auto;
  width: 50%;
}

.export {
  color: white;
  background-color: #35424E;
  width: 30%;
  font-size: 13px;
}

.export xmp {
  margin: 0;
  padding: 25px 10px;
  border-radius: 3px;
  background-color: rgba(0, 0, 0, .2);
  overflow: auto;
}

h3 {
  font-size: 22px;
  text-transform: uppercase;
  margin: 0 0 25px;
}

hr {
  border: 0;
  height: 1px;
  background: #ccc;
  margin: 25px 0;
}