:local {
  .outer,
  .inner {
    height: 100%;
    overflow: hidden;
    padding: 0;
    position: relative;
    width: 100%;
  }

  .outer {
    padding: 1rem;
  }

  .inner {
    border: 5px dashed rgb(128, 128, 128);
  }

  .center {
    align-items: center;
    display: flex;
    flex-direction: column;
    left: 50%;
    position: absolute;
    top: 50%;
    transform: translate3d(-50%, -50%, 0);
  }

  .button {
    font-size: 2rem;
  }
}