CodePen Embed - :focus vs :focus-visible

<button class="focus">
  I show an outline after you click on me 
</button>

<button class="focus-visible">
  I show an outline only when you interact with me via the keyboard
</button>

.focus:focus,
.focus-visible:focus-visible {
  outline: 4px solid hotpink;
}

button {
  font: inherit;
  font-family: sans-serif;
  display: block;
  margin: 2rem;
}

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