.controls {
  margin-top: 1em;
  padding: 0.5em 0;
  overflow: auto;
}

.controls button {
  /*display: inline-block;*/
  background: #8f7a66;
  border: 0;
  border-radius: 3px;
  padding: 0 20px;
  color: #f9f6f2;
  height: 40px;
  line-height: 42px;
  font-family: "Clear Sans", "Helvetica Neue", Arial, sans-serif;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
}

.controls button:hover {
    background: #ad957f;
} 

.ai-button, #feedback-container {
  line-height: 40px;
  font-size: 36px;
}

#run-button-container {
  float: right;
}

#chart-container {
  width: 500px;
  height: 200px;
}

#chart {
  width: 100%;
  height: 100%;
  font-size: 16px;
  line-height: 1.2em;
  color: #444;
}