Semantic HTML

I am trying to learn HTMl from wsebsite. Can anyone help me out with what is semantic HTML?

reddensoft said:

I am trying to learn HTMl from wsebsite. Can anyone help me out with what is semantic HTML?

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They are just tags that describe what they do both in a human and machine readable way.

For example:
<div> Play Video! </div>

And:
<button> Play Video </button>

Both are valid html for a browser. But you can clearly see that the latter makes it more clear that your element is a button. This also helps accesbility because things like screen-readers and high contrast themes can now work properly.

it just helps readability of the code