message: Tweak the key on mobile
diff: margin-right: 12px;
  }
  p {
  - margin: 0 12px;
  + margin: 0 12px 4px 12px;
  }
  }
  }
  .key {
  margin-right: 1em;
  + white-space: nowrap;
  + @include phone-portrait {
  + margin-top: 4px;
  + display: inline-block;
  + }
  &::before {
  content: '';
  display: inline-block;
  