Whether the classes have semantic value?

Hello, 1st question: is there any semantic value in class names and id?
2nd question: what is a structuring with the help of <h></h>, and what does it do?
July 8th 19 at 15:40
1 answer
July 8th 19 at 15:42
1. Classes have a semantic value with it is huge. ID - no.
2. SEO-friendly code has specific laws on this issue. It is recommended to use h1-h6 for the purpose. For example, in the beginning of the page should be the h1 as it is the main title of the site.
The headers consist of text that has a navigation value. Well, of course, for 3 different h4 - 3 different font size in styles is also not the best practice.

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