MARK tag Increased importance Using <h> tags semantically – an example:
Important! The color, size, and horizontal layout of the text in the example above has no impact on the semantic meaning of the tags.
Semantically, the HTML below is exactly the c level executive list same thing!
Keep in mind throughout this article that the visual appearance of the text contained within HTML5 tags does not affect the semantic meaning that these tags convey to search engines.
STRONG tag = Important
I have provided two presentation examples. The design of the text inside the tags is not related to the semantics of the strong tag.
If one or more words are more important than others in the sentence, use the <strong> tag.
For SEO, while it’s tempting to use <strong> tags around all your keywords, don’t. Overusing these tags dilutes the effect and will trigger spam filters. Use this tag sparingly and wisely.
EM tag = Accentuation
The design of the text inside the tag is not related to the semantics of the <em> tag.
If one or more words need to be read with intonation 5 essential elements in a download landing page emphasis to make the sentence more meaningful, use the <em> tag.
By reading this sentence aloud, you would place more emphasis on the words “or more.”
A screen reader will emphasize with its (robot) voice where it encounters this tag.
The design of the text inside the tag is not related to the semantics of the mark tag.
It is used to mark (or underline) text to draw the phone number iran reader’s attention because of its relevance to the user’s current activity/context. For example, underlining a short answer to a question.
DEL tag = Deleted text, INS tag = Inserted text
Here I changed my mind about my favorite food after a trip to Thailand 
You can use it to indicate updates and changes. Use <ins> in combination with <del>.
ABBR Tag = Abbreviation / Acronym