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POIsn't it okay to define relative font-sizes for child elements when the parent element uses Pixels (px)?
 

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  1. POIsn't it okay to define relative font-sizes for child elements when the parent element uses Pixels (px)?
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    <p><strong>1)</strong> I came across <strong><a href="http://css-tricks.com/css-font-size/" rel="nofollow">THIS ARTICLE</a></strong> today, which states:</p> <blockquote> <p>The most popular method in working with em values is to set the font-size on the body to 62.5%. Because the default browser font-size is 16px, this makes it 10px (without hard-setting it to 10px, which wouldn't cascade).</p> </blockquote> <p>What I just quoted (above) essentially means that, I CAN'T set the font-size of the body to 10px directly and then define the font-sizes of other elements in em or % based on that. Isn't it what it meant, or did it get it wrong?</p> <p>For example, I have <code>body {font-size: 10px;}</code>. And now I set <code>p {font-size: 1.4em;}</code>. Doesn't it mean, the font-size of <code>p</code> is actually 14px? Isn't that cascading? (or is this going to cause me problems on other devices? - - mobiles, tablets, etc.)</p> <hr> <p><strong>2)</strong> For any given element, defining its <code>font-size</code> as 1.8em or 180% makes no difference what-so-ever, right? I mean precisely, for an element (whose size we are defining), an <code>em</code> is essentially a decimalized form of <code>%</code>, isn't it?</p> <hr> <p><strong>EDIT: 3)</strong> 'em' is often referred to as a very mobile-friendly sizing unit. How about %? Is it just as good, considering Q2?</p>
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    1. USBoltClock
    1. USits_me
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    1. COWell, it may be "The most popular method", but that doesn't mean you CAN'T do what's not as popular.
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      1. USBoltClock
    2. COWell, did you try? Did it work?
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      1. USŠime Vidas
    3. CO@BoltClock I don't care if it's popular. The method makes a lot of sense actually, it makes stuff easier. But I want more control, and use 10px directly instead. I hate any "gotchas!" in the process, and that the reason why I am asking it here.
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      1. USits_me
 

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