Przykład D3

<!DOCTYPE html>
<!-- Add a title -->
<h1>First html document</h1>

<!-- Add a bit of text -->
<p>This is my first sentence</p>

<!-- Add a svg shape -->
<svg>
  <circle style="fill: #babcda" stroke="black" cx=50 cy=50 r=40></circle>
</svg>

Perfect Platypus