Html5/Css for SEO?

Question

css

How much does an SEO need to know about html5/css? I mean Seoshnik is not a layout designer, from what I saw, the SEO-shnik needs to know the description, title, h1-h6, that is, he does not need deep and thorough knowledge, or I'm wrong about something,

Answer 1

I think nowadays you need to know html at the level "better than a developer", you can know css at the level - "it is somewhere". I argue - at the moment - most developers write without semantics, accessibility. Your task, as SEO and site promoter to the masses, is to shame the developer in ignorance of basic things. Well, fix its jambs, or ask to fix it (your choice). Semantics really helps robots to "look" at the structure of the site (and this is your direct task, to make sure that the robot does not "spit" passing through the code). So if you perfectly know what this or that tag means, it will be great. Editing styles is no longer your task.
Ps: you will be very lucky if you come across an intelligent developer who writes everything correctly for you everywhere, indicates nav, sidebar, section, aside, video, etc. But this usually happens rarely.

Answer 2

If you want to fix the errors generated by the w3c validator yourself, then you need to know HTML at a good level. CSS is not needed at all. And if you are going to give the correction to a full-fledged layout designer, then description, title, h1-h6 for the eyes.

Answer 3

An SEO specialist should not know anything about HTML/CSS. Otherwise, he will think that he is the smartest and climb where it is not supposed to. It is enough to describe the presence of the necessary markup and special tags, let a separate person do the rest