.resistor {
    display: flex;
    /* height: 60px; */
    width: 10px;
    background-color: #f0d9b5;
    border-radius: 5px;
    margin: 10px auto;
    position: relative;
    align-items: center;
  }
  
  .band {
    height: 100%;
    width: 20px;
    margin: 0 -5px;
    z-index: 2;
  }
  
  
  .controls button {
    padding: 8px 15px;
    margin: 0 5px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
  }
  
  .controls button.active {
    background-color: #2E7D32;
  }
  
  select {
    width: 100%;
    padding: 8px;
    margin: 5px 0 15px;
    border-radius: 4px;
    border: 1px solid #ddd;
  }
  
  .result {
    font-size: 1.2em;
    font-weight: bold;
    margin: 20px 0;
    text-align: center;
  }
  
  .band-container {
    display: none;
  }
  
  .band-container.active {
    display: block;
  }