.ai-button {
    display: inline-block;
    background: #8f7a66;
    border-radius: 3px;
    padding: 0 20px;
    text-decoration: none;
    color: #f9f6f2;
    height: 40px;
    line-height: 42px;
    display: block;
    text-align: center;
    float: left;
    width: 20%;
    padding: 0;
    box-sizing: border-box;
    margin-top: 2px; 
  }
  
  .hint-button {
    display: inline-block;
    background: #8f7a66;
    border-radius: 3px;
    padding: 0 20px;
    text-decoration: none;
    color: #f9f6f2;
    height: 40px;
    line-height: 42px;
    text-align: center;
    float: none;
    width: 20%;
    padding: 0;
    box-sizing: border-box;
    margin-top: 2px; 
  }