line-height: 3.692307692; ??? [twentytwelve]

In which theme is this? It looks like it’s added by JavaScript.

notes section of style.css does not really do a great job of explaining why this is necessary…

General CSS queries can be asked in general CSS forums such as;
https://csscreator.com/forum
https://www.cssforum.com.pk/
https://css-tricks.com/forums/
https://www.welovecss.com/
https://www.codingforums.com/

This is straight out of twentytwelve.

Why are you marking this resolved? Not cool.

Why are you marking this resolved? Not cool

I think that’s a bug in the forums https://www.ads-software.com/support/topic/can-i-test-out-a-forum-bug?replies=1

Right. Okay. Sorry.

Anyway, this is a stock twentytwelve question, and it’s something that’s meant, I guess, to be a good thing. So as it’s new, it would be great if someone could explain it, and perhaps include it in the notes section of styles.css so it’s understood. I realize all the clues are probably there, but I’m just not getting it, so would appreciate some help from anyone that’s clued up.

Specialmachine, try this article for an explanation of the line height and search for the text excerpt, “For instance, almost right off the bat in style.css we see:”.

Straight from the Twenty Twelve theme:

/* =Notes
————————————————————–
This stylesheet uses rem values with a pixel fallback. The rem
values (and line heights) are calculated using two variables:

$rembase: 14;
$line-height: 24;

———- Examples

* Use a pixel value with a rem fallback for font-size, padding, margins, etc.
padding: 5px 0;
padding: 0.357142857rem 0; (5 / $rembase)

* Set a font-size and then set a line-height based on the font-size
font-size: 16px
font-size: 1.142857143rem; (16 / $rembase)
line-height: 1.5; ($line-height / 16)

———- Vertical spacing

Vertical spacing between most elements should use 24px or 48px
to maintain vertical rhythm:

.my-new-div {
margin: 24px 0;
margin: 1.714285714rem 0; ( 24 / $rembase )
}

———- Further reading

https://snook.ca/archives/html_and_css/font-size-with-rem
https://blog.typekit.com/2011/11/09/type-study-sizing-the-legible-letter/

Yeah, you’re not really answering the question. I know how the line-height thing works. I’m asking how did they arrive at this number when in the example they use the font size, which is in this case would be 12px to arrive at the line-height.

line-height: 2; ($line-height / 12)

That is, if i wanted to assign a line height of 12px!! But why are they assigning this seemingly crazy figure of 3.692307692? I just want to know what the formula was to arrive at this number. You can keep posting links, but if you don’t know, just don’t answer.

12 x 3.692307692 = 44.307692304

That’s not even a round number. So what’s the point? It’s not 48px (or 24px top and bottom).

If you use 12px font, your line height would be 2 because
you divide $line-height (24) by the font size value.

24 / 12 = 2

I just wrote that. That’s the only clear thing here, but I am not trying to assign a line-height of 2. I am asking why the default line-height for the elements I posted above are as they are. And how, using this formula, one achieves that number and why?

When you do the math, as I’ve done there for you to see, it would be as if, in px, the author wanted to assign 44.307692304px as the line height. That doesn’t make sense to me.

assuming the font-size is 13px at that point, then the number would result in precisely 13 x 3.692307692 = 48 [px] line height;

the theme’s author could have chosen any other way of expressing the line height – https://www.w3schools.com/cssref/pr_dim_line-height.asp

however, those numbers with a precision of 9 decimals are simply a tribute to ‘hail o digital calculator’;

assuming
a monitor pixel density of about 100 ppi (pixels per inch)
and
a ‘rem’ base of 14px;

then a letter with the size of
1rem is about 3.5mm high (on the screen);

0.001rem is about 3.5micrometer (less than the tenth of the diamater of a human hair);

0.000001rem is in the range of nano meters;

0.000000001rem is in the range of pico meters – less the a tenth of the size of a single helium atom.

whoever has written those numbers into style.css of Twenty Twelve, certainly loved precison …

any css size with a precision of more than two decimal figures is just not realistic.

Thank you, sir!!!