Html elements sub and h3

sub element Specifies that the enclosed text should be rendered in the browser as subscript and h3 element Heading Level 3. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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sub sub and h3

Advanced example

Click the html element name in the punctuation list to advance the example in 'Tryit-Editor':
<a><audio>, <button>, <details>, <embed>, <iframe>, <input>, <keygen>, <label>, <menu>, <object>, <select>, <textarea>, <video>, <canvas>, <img>, <math>, <svg>, <h1>, <h2>, <h3>, <h4>, <h5>, <h6>, <hgroup>, <article>, <aside>, <nav>, <section>, <abbr>, <b>, <bdo>, <br>, <cite>, <code>, <command>, <dataList>, <dfn>, <em>, <i>, <kbd>, <mark>, <meter>, <noscript>, <output>, <progress>, <q>, <ruby>, <samp>, <script>, <small>, <span>, <strong>, <sub>, <sup>, <time>, <var>, <wbr>, <base>, <link>, <meta>, <style>, <title>