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.controls {
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    margin-top: 1em;
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    padding: 0.5em 0;
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    overflow: auto;
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  }
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  .controls button {
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    /*display: inline-block;*/
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    background: #8f7a66;
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    border: 0;
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    border-radius: 3px;
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    padding: 0 20px;
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    color: #f9f6f2;
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    height: 40px;
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    line-height: 42px;
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    font-family: "Clear Sans", "Helvetica Neue", Arial, sans-serif;
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    font-size: 18px;
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    font-weight: bold;
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    cursor: pointer;
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  }
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  .controls button:hover {
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      background: #ad957f;
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  } 
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  .ai-button, #feedback-container {
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    line-height: 40px;
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    font-size: 36px;
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  }
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  #run-button-container {
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    float: right;
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  }
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  #hint-button-container, #feedback-container {
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    float: left;
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  }
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  #feedback-container {
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    background: #8f7a66;
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    color: #f9f6f2;
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    margin-left: 1em;
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    font-weight: bold;
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  }  
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