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HTML, CSS: overbar matching square root symbol

Answer 1

+3 A:

You could set the CSS for the text that should appear under the overbar as

text-decoration:overline

EDIT: This comes pretty darn close to what you want (Chrome 4.1.249):

<div style="font-family: Georgia; font-size: 200%">
    <span style="vertical-align: -15%;">&radic;</span>
    <span style="text-decoration: overline; vertical-align:-20%;">&nbsp;x&nbsp;+&nbsp;1&nbsp;</span>
</div>

Unfortunately there does not appear to be a way to modify the thickness of the overline itself...

Matthew Jones 2010-05-18 20:34:48

I just tested that on the above example using Firebug and it works *perfectly*!.

EAMann 2010-05-18 20:44:36

I see (though the enter after the span adds horizontal space, I presume you added it because of formatting on StackOverflow). Though, lowering the expression wasn't my goal, just lowering the bar, the text is at a good position. Thanks for helping me.

Pindatjuh 2010-05-18 20:59:59

This works perfectly for me if there is no whitespace between the first end span tag and the next start span tag. `</span><span>` http://jsbin.com/utolo You could also use a `border-top` declaration to try and match the thickness and it looks pretty good: http://jsbin.com/utolo/2

ghoppe 2010-05-18 21:18:43

Messed with the vertical-align (setting it to -25%) to make it line up better. Score! http://jsbin.com/utolo/3

ghoppe 2010-05-18 21:24:04

The problem is that when the size is smaller, they don't match up. As I would like to use this as a "container", how big or small it will be, it should always match the root's tail. (For instance, the size will be smaller inside a division than "stand-alone".)

Pindatjuh 2010-05-18 21:24:51

@Pindatjuh I would make two styles then, large and small (for division)… or more. I don't think it's going to be feasible to code css that will perfectly match the font metrics for the √ symbol regardless of size. http://jsbin.com/utolo/4

ghoppe 2010-05-18 21:34:44

Answer 2

+1 A:

you miight be able to put the characters under the root in a seperate span then style it with a border on top. But you'll probably have to increase the font-size of the √ to make it line up.

jordanstephens 2010-05-18 20:35:09

Answer 3

+1 A:

The following works exactly as I wanted it:

<div class="math">
    &radic;<span>&macr;&macr;&macr;&macr;</span><span style="margin-left: -2.39em; vertical-align: 0.1em;">x + 1</span>
</div>

(Where math defines a font-family: Georgia and font-size)

This works on any font-size! :-)

Example: http://jsbin.com/ihaba3

Pindatjuh 2010-05-18 21:14:25

And this is how it looks like, with division: http://jsbin.com/ihaba3/2

Pindatjuh 2010-05-19 00:11:04

Answer 4

+1 A:

<math xmlns="http://www.w3.org/1998/Math/MathML">
    <msqrt>
        <mrow>φ(2π−γ)</mrow>
    </msqrt>
</math>

reisio 2010-05-19 03:56:31

Would be nice if this worked in all current browsers, wouldn't it?

ghoppe 2010-05-19 03:59:09

It'd be nice if people stopped using IE, yes.

reisio 2010-05-19 04:13:51

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HTML, CSS: overbar matching square root symbol

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