What is the <span> tag?

Question

What is it good for?

Answer 1

Span tags can be used to group inline-elements in documents. Tags provide a way to add a hook to a part of a text or a part of a document and there is no visual change. :)
This will help ↓
https://www.w3schools.com/tags/tag_span.asp

Answer 2

<span> tag is an inline tag. It is used to define some short quotations inside a large paragraph. So, that the text may be used and styled separately.
Ex.
<p>......................<span id="style" style="color:blue"> small text </span>............</p>