A CSS question

Woodssi · 01-18-2022, 02:30 PM

I will apologise, in advance, if this post should be under another category.

I'm using Sigil (latest version) to edit a project that's a scan of an old title, to just make it look a bit smarter (mainly alignment issues).

Some of the Chapters have a main title, but then sections broken down with Roman Numerals as dividers. At present they look too close to the preceding, and following, text.

In the CSS stylesheet, I see this for the appropriate lines:-
display: block;
font-weight: bold;
text-align: center;
text-indent: 0;
margin: 1em 0 1em

My question is, why does the margin only have 3 entries?
(Shouldn't there be 4, for Top, Bottom, Left and Right?)

If not, which entry refers to which position?

Thanks

theducks · 01-18-2022, 02:55 PM

It can have 1, 2 3 or all 4
1 is all the same
2 is top/bot, Left/right
3 (I can never remember

)
4 is as you said

Moonbase59 · 01-18-2022, 02:58 PM

As with many CSS properties, you can use margin with one, two, three or four parameters.

One param = all four sides.
Two params = vertical | horizontal
Three params: top | horizontal | bottom
Four params: top | right | bottom | left

See https://developer.mozilla.org/en-US/docs/Web/CSS/margin.

EDIT: Darn, @theducks was faster!

P.S.: Don’t expect every reader to honor margins on every block element. Some are notorious in ignoring whatever you give them, mostly on horizontal margins.

hobnail · 01-18-2022, 03:29 PM

See also

https://www.w3schools.com/css/default.asp

Woodssi · 01-18-2022, 08:36 PM

Thanks for those comprehensive replies.

Topic can now be closed.

01-18-2022, 02:30 PM	#1
Woodssi Enthusiast Posts: 45 Karma: 10 Join Date: Sep 2011 Location: Barrhead, Scotland Device: Kindle Paperwhite (2)	A CSS question I will apologise, in advance, if this post should be under another category. I'm using Sigil (latest version) to edit a project that's a scan of an old title, to just make it look a bit smarter (mainly alignment issues). Some of the Chapters have a main title, but then sections broken down with Roman Numerals as dividers. At present they look too close to the preceding, and following, text. In the CSS stylesheet, I see this for the appropriate lines:- display: block; font-weight: bold; text-align: center; text-indent: 0; margin: 1em 0 1em My question is, why does the margin only have 3 entries? (Shouldn't there be 4, for Top, Bottom, Left and Right?) If not, which entry refers to which position? Thanks

01-18-2022, 02:58 PM	#3
Moonbase59 Zealot Posts: 111 Karma: 196896 Join Date: Oct 2021 Location: Germany Device: Tolino Vision 5, Tolino Tab 8"	As with many CSS properties, you can use margin with one, two, three or four parameters. One param = all four sides. Two params = vertical \| horizontal Three params: top \| horizontal \| bottom Four params: top \| right \| bottom \| left See https://developer.mozilla.org/en-US/docs/Web/CSS/margin. EDIT: Darn, @theducks was faster! P.S.: Don’t expect every reader to honor margins on every block element. Some are notorious in ignoring whatever you give them, mostly on horizontal margins. Last edited by Moonbase59; 01-18-2022 at 03:02 PM.

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01-18-2022, 02:55 PM	#2
theducks Well trained by Cats Posts: 29,782 Karma: 54830978 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	It can have 1, 2 3 or all 4 1 is all the same 2 is top/bot, Left/right 3 (I can never remember ) 4 is as you said

01-18-2022, 03:29 PM	#4
hobnail Running with scissors Posts: 1,552 Karma: 14325282 Join Date: Nov 2019 Device: none	See also https://www.w3schools.com/css/default.asp

01-18-2022, 08:36 PM	#5
Woodssi Enthusiast Posts: 45 Karma: 10 Join Date: Sep 2011 Location: Barrhead, Scotland Device: Kindle Paperwhite (2)	Thanks for those comprehensive replies. Topic can now be closed.

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