body {
    background-color: #15181f;
  }

  #overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #040615;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    color: #fff;
    font-size: 20px;
  }

  .loading-gif {
    width: 64px;
    height: 64px;
  }

  #buttons-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9998;
  }

  #plus-button,
  #minus-button {
    width: 25px;
    height: 25px;
    font-size: 15px;
  }