Ok, I am quite new to frontend development so please be nice if this is a dumb question :)
I understand that this may not be possible but when applying line-height to an element say an h1, the line-height applies extra space to both the top and bottom of that element.
This kind of makes sense, but i only want line-height to be applied to the bottom of the element so the tops of my h1, h2 etc can be alined perfectly with other elements.
This jsfiddle shows the problem: http://jsfiddle.net/zja4c/1/
This jsfiddle shows what i want to achieve but am forced to use negative margins: http://jsfiddle.net/25UTA/
The h1 with background colour of red aligns correctly to the top of the left div, but the text doesnt.
My question is therefore, is there a way to:
Apply line-height to only the bottom of an element or,
Align an element to the top of the space created by applying line-height somehow
Using line-height is your only option if you wish to maintain proper spacing across line-breaks. Padding will occur on the bottom of the block-level H1 element, as you pointed out. I think negative margins are your best bet, but you'll have to fine-tune it line up perfectly with a 50px line-height:
http://jsfiddle.net/25UTA/1/
If negative margins can't be used for some reason, you can use relative positioning and a negative top value to achieve a similar effect.
http://jsfiddle.net/25UTA/2/
Using em's or percentage font-sizes and line-heights might make this eaiser.
None of these answers reference elements with their display set to inline.
Line-height is a setting that refers to inline elements. Every answer so far has referred to using padding and margin, which don't work with inline styled text.
You can modify the positioning of text within its line with vertical-align. Here's a link to an article that goes into copious detail about the property and how it works:
http://christopheraue.net/2014/03/05/vertical-align/
A simple solution is to make the line-height 70% and add a little bit of bottom padding.
p, h2 {
line-height:70%;
padding-bottom: 3px;
}
In my knowledge its not possible to apply line-height only for bottom using css.
So you can try with padding as user1538100 said.
You could forget line height completely and use padding-bottom:
fiddle
Related
Here is a test-case for my problem:
http://game-point.net/misc/testParaPadding/
I want the progressBarGreen.png image to be inside the DIV, and the DIV is exactly the right height (15px) to hold it, but there are a couple of pixels padding at the top of the DIV. Why? The browser seems to be sizing the content as if it contained text because the padding changes if I remove the font-family styling for the body, but there is no text in the DIV.
Interestingly this problem doesn't happen in Firefox's quirks mode.
jsFiddle Example
You need line-height:15px on the div holding the image
edit: Explanation for this behaviour line-height affecting even no-text blocks
Your image is the right size, but images are inline elements by default, and will be affected by the page's line-height, font-size, and other properties of inline elements.
If you add a line to your image's style reading display: block;, it will become a block-level element, and not be affected by any of those properties.
The initial value for vertical-align is always "baseline".
You can fix that by adding a vertical-align:top to your image ;)
Use
position:absolute;
To get the image on the other DIV exactly inside it.
Check this fiddle: http://jsfiddle.net/sRhXc/2/
Since I am having trouble with Firefox about positioning a block element by nature (header) to be inline by using display:run-in; i'm asking you for your help ! been searching for quite some time now and I cant find which CSS method could be used instead of just applying display:run-in; to the element, which is supported in all the major browsers. It is crucial that i position the element this way.
Anyone knows a method how to do this ?
If you'd like to display your element as a block element, but would position it inline, then
display: inline-block;
will do the trick for you.
The MDN still lists run-in as an experimental value, so we shouldn't be too surprised if it doesn't fully function in Firefox at this time.
As for options, there are at least two you could use: display: inline and display: inline-block.
Inline might suffice if you don't need the properties of a block element on your header. Inline-block keeps it as a block element, so you can still do nice things like give it width, height, margin and so on.
View them on JSFiddle.
Alright i found a solution ! :) Using display:inline; in a combination with float:left; will make a block element by nature use space only as much as he needs, not full 100% of its parent element.
There is just one problem with this tecnhique if you are using bigger font for lets say a heading and want to add a paragraph right after it (on the same line). If the headings font-size is a bit bigger, heading could take 2 or even more lines of space in height where paragraphs text should be,and you will have a small gap between header and another row of paragraph under it. The solution is to add display:block; and margin-top:Xpx; to the paragraph element to align it as needed.
Here is a very simply jsFiddle to demonstrate my problem: http://jsfiddle.net/ryandlf/mSmUv/4/
When an element has a top padding or margin and it sits on the first line within a div, the div does not respect that padding or margin and push the element down. In most cases this isn't an issue, but for example, if I have a button that has a top border and padding the top of the border will be cut off because the div is not taking into consideration the padding value.
Is there a workaround for this other than just blindly setting margins or padding on every container div element and hoping I have added enough to account for any internal element that might be affected?
your link with class button is not a block element, it is inline element. Change this default behaviour by adding dispaly: block to it and it will work as expected. Proof available on jsfiddle.
So to sum up, the problem is not with the div - it is the problem with css - inline elements ignore margin and padding because they cannot 'reserve space'.
UPDATE: To answer your comment, here is the solution you might be looking for
The button element is inline. To get the desired behavior you can set display:inline-block.
Check here
Try to add following to the parent div:
overflow: hidden
I hope it helps!
I've got an example mht file here that will help demonstrate my issue; if you are using FF then this addon will help you view the mht file. You will prob need to download the file and view it locally since github doesn't provide the right mime type for the file.
Basically my issue is this that I have a div which is 32px in height surrounding another div which is 29px in height, and I have no idea why the former is 32px tall.. It should be 29px tall afaict.. I don't want to set height:29px tho because if you resize the window so that the nav items take two lines then the height shouldn't be 29px for either div.
So what is wrong here?
make the following changes-
(-) to make your ul and wrapper div bottoms to align change class #navigationSecondary ul.base
to have a display:table; instead of display:inline-block;
(-) to remove the 3px of blue at the bottom change class #navigationSecondary to have padding:0; as sugested by Marcel.
the use of display: inline-block; on the ul.base is the cause.
when you use that it formats an element like it were inline (it only formats the actual content of the element like a block), so ul.base will have the usual 2-3px top and bottom "padding" that a normal inline element has. It's not really padding it's the leading vertical spacing i.e. it's what gives lines enough space to provide for the ascenders and descenders of letters like g, h, p, etc.
the use of it here is to make it seem like your ul is containing the floated child list elements. To make an element contain it's floated children there are other ways to do this, one way is, on ul.base
remove: display: inline-block
add: overflow: hidden;
[UPDATED] re the tabs.. sorry I didn't see them before I started
Here's the "float everything" solution to containing child floats as it applies to your code, with some other suggestions too
.menuContainer all it needs is position:relative; and the border-right rule
.navigationSecondary float it left with a width of 100%; (you can remove z-index it's not doing anything)
.wrapper float it left with a width of 100%, remove the height
ul.base doesn't actually need anything but remove the display-inline-block.. it's not containing the child lists but there's no effect involved, if you want to you can float it left with a 100% width too
[UPDATE 2]
I just copied this to a plain HTML document and I think that just changing the DOCTYPE to an HTML4 transitional one solves the problems with no changes to the code ?? (why that should change the display be I don't quite know! - but the use of "target=_parent" is "not allowed" in Strict Doctypes so that'll be why it's not validating)
I'll put it in JSBIN so others can try it out on various browsers
I changed it to:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
jsbin (with original HTML5 doctype) is here http://jsbin.comhttp://jsbin.com/agihe5/2/ - shows gap
jsbin with changed Doctype - but no changes to CSS code - with flash video to show dropdowns are working is here : http://jsbin.com/inare6/2 - no gap!
jsbin with no changes to Doctype, suggested changes to code and the flash insert to show z-index working is here: http://jsbin.com/iriya4
with the latter, code changes are detailed in the source, they have moved to the bottom of the snapshot CSS
I've tested the changed Doctype version as working in IE7, IE8, FF3.6.15, Safari4 (Win) and Chrome
Providing a test case which requires me to use Firefox and download an extension to view it is highly annoying.
I just did it anyway (purely because of the bounty), and the only change you need to make to your test case is:
On #navigationSecondary ul.base, add vertical-align: top.
The extra height is gone.
Here's a demo based on #clairesuzy's demo titled "jsbin (with original HTML5 doctype)".
(The only change was adding the aforementioned CSS rule):
http://jsbin.com/agihe5/3
The other answers may work (I didn't test them), but (providing I've understood the issue properly), this is by far the easiest fix.
Apparently #navigationSecondary has padding:0 0 3px; set in unnamed-1.css on line 2.
Everything inside ul.base has a height of 24px. Itself has a padding of 2px. So it's height is 26px. It's parent div.wrapper has a height of 29px, 3px extra. It's not caused by the 3px padding of div#navigationSecondary. Nothing is contributing the extra 3px so I'm suspecting a float issue. Anyway I managed to fix it by floating 2 divs.
Add float: left; width: 100%; to div.wrapper and div#navigationSecondary.
Remove display: inline-block; from ul.base.
Floating div.wrapper and div#navigationSecondary collapses them to their nearest floated child element, in this case li.base, and removes the extra 3px. 100% width brings back the stretch.
Hope this helps.
<body style="zoom:0.99; -moz-transform: scale(0.99); -moz-transform-origin: 0 0;">
adjust accordingly, and change hight and width around
Of course. This is simple. A very elementary element positioning issue.
inline-block default vertical-positioning
ul.base is an inline-block. which means that it has spacing calculated like a block, but positioned like an inline-element.
The default positioning of inline-element is to align on the baseline of text. However, text goes below the baseline for letters such as g, j, q etc. This is called "descenders".
The height of a box is always from the top of the font to the bottom of the descenders.
The wrapper takes on the height of its children. Which means that the inline-block ul.base, positioned on the baseline.
Your font at that particular size happens to have a 3-pixel descender. Voila. Your mysterious 3-pixel gap is merely the text's descenders. And your inline-block element is positioned on the baseline (i.e. on top of that 3 pixels).
Tests to confirm that this is right
Change font size. You'll see that 3-pixel changes. Change font size to small enough and it'll reduce to a 1px descender. Your so-called "gap" will shrink.
Change ul.base to something other than an inline-block (of course you have to add something to clear the floats inside). It will no longer have the 3 pixels at the bottom because a non-inline element is not positioned on the baseline.
Position ul.base on the absolute bottom instead of the default (baseline). That 3-pixel gap disappears. Use this CSS rule: vertical-align:bottom
Morale of the story
You always have to be careful with baseline positioning whenever you use inline-block display style.
Off topic
Handling font descenders is especially frustrating with Asian languages. As you know, CJK languages do not have characters that go below the baseline. However, they are typically placed on the baseline (so that they can inter-mix with other European languages, which have descenders). However, when one places a block of text with a background containing only Asian characters, the text will look like it is moved to the top, with an ugly empty gap on the bottom (the descender).
using css how do I put a span on top of other spans.
I have several spans in the page and at the end of the page I have this
<span id="lastSpan" style=" margin-left:726px; margin-top:30px;"></span>
problem with that is that it never goes to 30px down from top. and stuck at same height.
any help will be appreciated
thanks
Span's are inline elements and don't adhere to margin on top and bottom. You need to set it to display: inline-block if you want margin to work.
spans are inline elements. you cant apply margins to them. use a div if you need a generic container with margins/height.
Inline elements can't be styled the same way as block elements. For one, they are (entirely?) unresponsive to margin and height commands. The solution is to add display: block; to your styling to force block styles.
span wont accept margin properies, cos it is inline element. You can change it to block element by display:block, float:left/right or position:absolute
This might be captain pædantry to the rescue, but that spans are inline-level has little to do with this. The fact that most (all) browser's house-style sheet implicitly sets the span's property on display:inline does unless the author or the user explicitly overrule this does though. As far as I know, the W3C does not define what the house style of browsers must be, but they do give some pointers for interoperability.
Of course, this might not be as relevant here, but there are actually some places where browsers don't pick their styles all the same. Notably Safari and Chrome do not place a dashed border under abbr by default while Firefox and IE do. Also, some browsers space paragraphs by using margin-top:1em; while others use margin-bttom:1em, in most cases this doesn't matter but there are some cases where defining explicitly which of the two you want in your site is in fact needed for a consistent look.