How To use h2 h3 h4 Headers in your articles

To give a title to a paragraph of an article, I notice that hardly anyone uses the headers h2, h3, h4, h5 and h6 but you just change the color, size and font of the text .

With Wordpress you can put a text header with a button

For greater SEO, use of the type <h2> tags that make sense for robots and humans (though with custom CSS).
Of course it's not that that will determine if you occupy the 1st or 100th position in search results from Google :)

How to use headers

It's very simple, just add (manually) the <h2> at the beginning of the header text and </h2> at the end, like this:

<h2>How to use headers</h2>

Too bad we did not like a button for the Bold, Italic, Underline and choose headers.

Of course, you can replace h2 h3, h4, h5 h6 or by rank and importance of the header and apparently must be used in order (h4 is always preceded by a h3 and h1 or h2 not but h2 can precede a h5 or h4).

Customize the display of headers

You can easily customize the display headers with CSS. For example, to customize the display of the h2 header as I did in the previous two headers, simply go to Edit HTML and just after]]></b:skin> add:

.blog-posts h2 {
border-bottom: 3px solid #3B5998;
color: #3B5998;
font: 2.5em/1.33em Helvetica,Arial,Helvetica,sans-serif;
margin-bottom: 18px;
padding: 10px 0 3px;
}

Same procedure to customize h3,h4, etc.