<h1 id="this-is-a-header">This is a header</h1>

<h2 id="another-one-1-here">12. Another one-1-here</h2>

<h3 id="do--it-now">Do ^&amp; it now</h3>

<h1 id="hallo">Hallo</h1>

<h2 id="not-now">Not now</h2>

<h1 id="hallo-1">Hallo</h1>

<h1 id="section">23232</h1>

<h1 id="section-1">33333</h1>

<h2 id="hallo-2">hallO</h2>

<h1>Header without ID</h1>

<h1 id="transliterated-day-la-vi-du">Transliterated: Đây-là-ví-dụ</h1>