append-to-nested-split-inline-1-ref.html

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<!DOCTYPE html>

<html>

  <head>

    <style>

      #outermost { border: 2px solid; }

      #outer { border: 4px solid yellow; }

      #inner { border: 6px sold green; }

    </style>

  </head>

  <body>

    <span id="outermost">

      <span id="outer">

        <span id="inner">

          <span style="display: block"></span>

          before span

          <span style="display: block">span</span>

          after span

        </span>

      </span>

    </span>

  </body>

</html>