HTML

the use of span tag

<p>This a <span class="crimson-text">crimson text</span> within others.</p>

what is span in html

<!--
	Span is used to group inline elements.
	You can apply specific attributes to the span element
	that will only be applied to the content within.
	Below is a simple example -->
<p>Black text <span style="color:#ff0000">Red Text </span>Back to Black</p>

html span tag

<span class="dumy">
  

span tag

The <span> tag is an inline container used to mark up a part of a text,
 or a part of a document. The <span> tag is easily styled by CSS or manipulated
 with JavaScript using the class or id attribute. The <span> tag is much like 
the <div> element, but <div> is a block-level element and <span> is an inline 
element.   :)