body {
    background-color: red;
}

.upDown {
  background-color: yellow;
  color: orange;

}
h1 {
    color:orange;
    text-align: center;
}

p {
    color:yellow;
    text-align: center;
}

.piano-keys {
    display: flex;
    list-style: none;
    justify-content: center;
  }
  .piano-keys .key {
    cursor: pointer;
    user-select: none;
    position: relative;
    text-transform: uppercase;
  }
  .piano-keys .black {
    z-index: 2;
    width: 44px;
    height: 140px;
    margin: 0 -22px 0 -22px;
    border-radius: 0 0 5px 5px;
    background: black;
  }

  .piano-keys .white {
    height: 230px;
    width: 70px;
    border-radius: 8px;
    border: 1px solid #000;
    background: whitesmoke;
  }
  
  .piano-keys .key span {
    position: absolute;
    bottom: 20px;
    width: 100%;
    color: black;
    font-size: 1.13rem;
    text-align: center;
  }
 
  .piano-keys .black span {
    bottom: 13px;
    color: white;
  }