<sub> and <sup>The <sub> and <sup> elements sets inline text to be displayed as subscript or superscript for solely typographical reasons.html-elementsHTML elementswidely2015-07-292018-01-29https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-sub-elementhttps://html.spec.whatwg.org/multipage/text-level-semantics.html#the-sup-elementhttps://developer.mozilla.org/docs/Web/HTML/Reference/Elements/subhtml.elements.subhtml.elements.suphttps://nowyoucanuse.com/features--sub-sup.html