em vs px

**tomyknoker** · 03-30-2007, 07:22 AM

was wondering when and where it's good to use em's instead of pixels? i have been reading up on a few books and they all use em's, especially for padding, but it seems like a lot more work than just using a pixel value... any opinions/ideas would be appreciated!

**Twey** · 03-30-2007, 09:13 AM

Always. ems are relative units based off the user's font size which adjust themselves to the user's preferences, so they're always a better choice than pixels. However, be careful not to mix units for width.

**tomyknoker** · 03-30-2007, 09:15 AM

What do you mean in the last sentecne? So your saying it's a bad idea to make a table 700px?

**Twey** · 03-30-2007, 06:02 PM

Yes. It doesn't take account of the user's preferences, and will look drastically different (possibly spoiling your design) at different resolutions and with different font sizes.

**boxxertrumps** · 03-30-2007, 06:10 PM

its what im using for my site right now, was getting annoyed that it was huge on the school compters or really tiny when im at home...
Google ads dont support ems (or percents) so im stuck with the same thing...
take a look, if you change the font size the page adapts...

**Twey** · 03-30-2007, 06:21 PM

boxxertrumps, you're serving XHTML as text/html. Don't do that, and what's the deal with "IMMA CHARGIN MA LAZER?"

**boxxertrumps** · 03-30-2007, 06:28 PM

Just random meams that the ads will read...
Not much text on my page, so it sometimes gets off topic...

But i keep forgetting to add the content header to the pages, thanks for reminding me.

Originally Posted by My Source

<?php header("Content-type: application/xhtml+xml; charset=utf-8"); ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"><head>
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=utf-8"/>

This is correct?

**Twey** · 03-30-2007, 06:37 PM

That's fine, although the <meta> is redundant.

**boxxertrumps** · 03-30-2007, 06:43 PM

Aren't headers stripped by some firewalls?
I know the deal with xhtml, your reluctant to use it because of compatability issues...
But i was thinking of switchingover to pure xml, so id be able to define my own elements...
(basicly divs/spans, anchors, images and styles sheets.)
I dont use JS or much of anything else on my site, so it would probably work...
or i could edit the stuff i dont use out of the existing xhtml doctype declarations.
Dont know whatthe next step is for my site.

**boogyman** · 03-30-2007, 06:56 PM

Originally Posted by boxxertrumps

Originally Posted by My Source
<?php header("Content-type: application/xhtml+xml; charset=utf-8"); ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"><head>
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=utf-8"/>

why not just take out the php scripting then ... there really is no need for it

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