<!doctype html>
<html>
  <head>
    <title>markdown-toolbar examples</title>
    <link href="https://unpkg.com/primer@latest/build/build.css" rel="stylesheet">
  </head>
  <body>
    <div class="container py-4">
      <p><button type="button">Add a Comment</button></p>
      <markdown-toolbar for="textarea">
        <md-bold class="btn btn-sm">bold</md-bold>
        <md-header class="btn btn-sm">header</md-header>
        <md-italic class="btn btn-sm">italic</md-italic>
        <md-quote class="btn btn-sm">