I think that the Habrahabr help could reflect a little more clearly the fact that the use of the <img> element allows (among others) the attribute align = "...", which allows to center the image or float itto the leftor right edge of the page .
In addition, it is not very clear how to center the text (to get a caption to the centered image). The <center> element is not allowed, the align = "..." attributein the <p> elementdoes not work ...