what is div and span in html code example

Example 1: 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>

Example 2: how to write

<span></span>