body {
    font-family: Arial, sans-serif;
    background-color: #282c34;
    color: white;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
  
  .synth-container {
    text-align: center;
  }
  
  h1 {
    margin-bottom: 20px;
  }
  
  .controls {
    margin-bottom: 30px;
  }
  
  .slider-group {
    margin-bottom: 15px;
  }
  
  label {
    display: block;
    margin-bottom: 5px;
  }
  
  input[type="range"] {
    width: 100%;
  }
  
  .keyboard {
    position: relative;
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: flex-end;
    transform: rotate(0deg);
    height: 200px;
  }
  
  .key {
    width: 50px;
    height: 150px;
    background-color: white;
    border: 1px solid #999;
    box-sizing: border-box;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    margin-right: -1px;
    z-index: 1;
    cursor: pointer;
  }
  
  .key.black {
    background-color: black;
    color: white;
    height: 100px;
    width: 30px;
    z-index: 2;
    position: absolute;
  }
  

  .key.active {
    background-color: yellow;
  }
  
  .key.black.active {
    background-color: orange;
  }

  .key span {
    font-size: 0.8em;
    margin-bottom: 5px;
    pointer-events: none;
  }
  
  .key:active {
    background-color: #ccc;
  }
  
  .key.black:active {
    background-color: #444;
  }