While <strong> and <em> are of course more semantically correct, there seem definite legitimate reasons to use the <b> and <i> tags for customer-written content.

2009年12月20日 · Both of them emphasize text. The &lt;em&gt; tag shows text as italics, whereas &lt;strong&gt; makes it bold. Is this the only difference?

2009年3月4日 · 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 a …

Explains the difference between 'rem' and 'em' units in CSS for font sizing and layout.

2015年6月17日 · cite & em is HTML 5 - standard, which insists in meaning. For a long time, old HTML (like ) is used for layout display. But the new standard requires that HTML should only consists of …

2011年7月31日 · The 'em' is a very useful unit in CSS, since it can adapt automatically to the font that the reader uses An EM is relative to the current element it is defined on. If you use relative sizes (like …

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 standpoint. …

2010年3月5日 · Relative: em (em-height), ex (x-height), px. The first two stand for and "x-height," which are common typographical measurements; however, in CSS, they have meanings you might not …

2010年8月9日 · Explains the concept of height in em units within CSS, providing insights and examples for better understanding.

2016年1月22日 · EM, is a measurement of the scale of a font compared to the rules direct parent. Several answers here seem to be making some fundamental errors in definitions of font sizes. Such …