While em is relative to the font-size of its direct or nearest parent, rem is only relative to the html (root) font-size. em gives the ability to control an area of a design. As in, scale the type in that … · Both of them emphasize text. The <em> tag shows text as italics, whereas <strong> makes it bold. Is this the only difference? They have the same effect on normal web browser rendering engines, but there is a fundamental difference between them. As the author writes in a discussion list post: Think of three different … · What is the difference between <cite>, <em>, and <i> tags of HTML ? All render same default style in most of browsers. Is there any meaning behind these tags ? Can … Sorry if this is sounding fussy but I'm about to produce a whole lot of HTML 5 and I was hoping someone out there had come up with some clear rules for when to use the <em>, … · I heard you should define sizes and distances in your stylesheet with em instead of in pixels. So the question is why should I use em instead of px when defining styles in CSS? Is there … · What is the difference between px, em and ex? And when you define font-size in CSS, do you use px, pt or em? em has the purpose of giving em phasis to the content. In practice emphasised content is typically displayed italicised, so the difference on the face of it is non-existing from a presentation …
