SEO not friendly – Site title H1 and post title H1…

Hi!

SEO not friendly – Site title H1 and post title H1.

Please:

1.
It is necessary that the header of the post should have a header with the tag h1. And Site title tag div.

2.
On the list of posts, you get a lot of headers with the tag H1. On this page, all posts need to make an H2 tag.

Thanks!