Html elements details and em

details element The HTML details element (<details>) is used as a disclosure widget from which the user the retrieve additional information and em element Specifies that the enclosed text should be emphasized. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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details details and em

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>