.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;
  }
  
  #hint-button-container, #feedback-container {
    float: left;
  }
  
  #feedback-container {
    background: #8f7a66;
    color: #f9f6f2;
    margin-left: 1em;
    font-weight: bold;
  }