Width of a divider 100% minus a few pixels - css

the image below will explain what I mean
click here for image
pretending that the red area is not a divider since I just want it to be empty with a fluid-like divider
position:absolute; left:0px; right:100px;
the above thing wont work because im trying to do this with a table inside a divider that is already using the position:absolute.... and it's actually for height but to make explaining simpler im just asking for the width

Your specific question is rather confusing, but, no, CSS has no concept of math. You can't do 100% - 50px, for instance, even though that would be really handy.
However, you can give elements margins of specific measurements, and if you don't give the element a defined width, it is, by default, 'auto' so will take up the remaining space.
So the left DIV could be set with a 100px right-margin.
That would answer your question if it were about CSS and horizontal spacing of a fluid layout.
As for your vertical spacing issues and a table, that's really an entirely different thing, so would suggest you revise your question with the specific markup you are looking for help on.

You could have a loot to less css framework (it deals with js)
you can use operators, check the Functions & Operations in less official website, very interesting, you can do things like:
#base-color: #000000;
#footer {
color: #base-color + #003300;
}

You can use width: calc(100% -100px); but it's not supported by all browsers unfortunately.

Related

How does bleeding works in CSS?

I recently read about the "holy grail" design and read implementations for it.
I saw a solution that does something strange on the menus from the sides.
{
margin-bottom: -3200px;
padding-bottom: 32000px;
}
I understand this mechanism causes the menu to be "infinite", I also found out this trick is called bleeding.
I don't understand how it works. Can someone please explain?
EDIT:
both answers were great. Wish I could pick 2. Picked the first one answered. I found another resource that emphasizes on negative margin values which explains bleed as well.
http://coding.smashingmagazine.com/2009/07/27/the-definitive-guide-to-using-negative-margins/
Thanks.
Padding-bottom at that value with stretch the background of the menu down far enough that it will always be seen to take up the whole length of the page. The margin adjustment gives the ability to still position content over this stretched out menu at a position according to the design of your site. Here is an example with the properties adjusted so that you can more easily see what is happening:
http://jsfiddle.net/PVKbp/23/
.two
{
margin-bottom: -3200px;
padding-bottom: 32000px;
margin-left: 100px;
margin-right: 100px;
background-color: #aaaaaa;
}
Bleed in printing is where you create a design purposely extended over the boundaries of the canvas, to ensure that all the page is covered. It basically means that you won't get any dodgy white edges where your design didn't "fit" the document properly:
http://www.duggal.com/connect/wp-content/uploads/2010/08/bleed2.jpg
I suppose the idea of bleed is the same in this instance, whereby you're trying to cover having any potential white spaces by adding padding to the menu
CSS
The only "holy grail" I've heard of in CSS is the 3-column one? If this is the case, I would say that having padding 32000px will be needlessly resource intensive
I've never really created 100% height responsive stuff, so here's a good resource for you: Twitter Bootstrap2 100% height responsive

Flexible div positioning

I have several divs on a page that all have the same width but different heights. They are all in one div, the #note1PreviewDiv. They all share the class .note, which has the following css code (among other):
.note{
width: 160px;
padding: 10px;
margin: 10px;
background: #e3f0ff;
float: left;
}
I thought with float: left; they would all automatically align so that they are well aligned among each other.
Here's a preview of what it looks like:
Current state http://posti.sh/img/ist.png
And here's what the positioning should be like:
Desired state http://posti.sh/img/soll.png
I think you get the idea. Somehow it seems to me the height of the leftmost div pushes the other divs in the second row to the right - but that's only guessing.
Thanks for your help!
Charles
You're not going to be able to do this easily with CSS only.
CSS3 has a new feature called column layout, but browser support is not great. IE9 and below don't support it.
See http://designshack.net/articles/css/masonry/ and the last example for CSS3 solution.
Have a look at these js / jQuery options for easier implementation and browser support:
masonry
isotope
vanilla masonry which doesn't need jQuery.
wookmark
The kind of lay out you want is really difficult (not possible?) without going for a column based approach and adding additional block elements to represent each column. This obviously won't work with a flexible number of columns if you want a dynamic layout based on screen size.
That said, you could always use JavaScript to dynamically place elements into columns, and get it to match the screen size.
Is the height of the parent container given a fixed value? If it is, try setting the height of the parent container to auto, and the overlow propery to hidden.

Three Variable-Width, Equally-Spaced DIVs? What About Four?

I have some very simple sub-navigation that I'm trying to build across the top of the content area within my web site, but CSS doesn't seem to have any simple solutions for such a common problem: I want either 3 or 4 equally spaced DIVs across the top of the page.
1) e.g. 3 Variable-Width, Equally-Spaced DIVs
[[LEFT] [CENTER] [RIGHT]]
2) e.g. 4 Variable-Width, Equally-Spaced DIVs
[[LEFT] [LEFT CENTER] [RIGHT CENTER] [RIGHT]]
My solution for the first problem with only 3 DIVs was to float the left and right DIVs, and then assign an arbitrary size to the middle DIV and give it "margin: 0 auto". That's not really a solution, but assuming there are no changes to the navigation, it gives a rough approximation of what I want the results to be.
The solution I have for the second problem with 4 DIVs is to simply center a DIV in the same way as before, but then float two DIVs within that, e.g.
[[LEFT] [[LEFT CENTER] [RIGHT CENTER]] [RIGHT]]
But again, this requires applying an arbitrary size to the middle DIV for alignment, and if any language or image changes are made to the site, alignment values will have to be recalculated. As well, it's simply an over-complicated solution that requires merging structure with presentation.
Any help is greatly appreciated.
EDIT 07/20/2012 5:00PM
Alright, I put the "table-cell" solution into place using percents, but I encountered another issue within my slightly more complex implementation: the issue at hand is that each DIV I was referring to is actually a container for two more DIVs which are icon-label pairs, inlined either by float or by display:inline-block.
e.g. http://jsfiddle.net/c3yrm/1/
As you can see, the final element in the list is displayed improperly.
Any help is again greatly appreciated!
EDIT 07/20/2012 7:16PM
Final solution with arttronics' help: http://jsfiddle.net/CuQ7r/4/
Reference: jsFiddle Pure CSS Demo
The solution was to float the individual breadcrumbs while using a simple formula to determine the percentage of breadcrumb width based on the number total breadcrumbs.
You could use percentages, then it just comes down to simple math:
[[LEFT=22%]2% margin><2% margin[LEFT CENTER=22%]2% margin><2% margin[RIGHT CENTER=22%]2% margin><2% marginRIGHT=22%]]=100%/??px
You could then specify a width for its container and use
display:inline;
to keep them inline.
Note: If you use borders to see what the divs are doing that will add space unnaccounted for so you would need to reduce your elements width by 1% or so OR just change their background colors.
ol {
width: 400px;
/*width: 800px;*/
display: table;
table-layout: fixed; /* the magic dust that ensure equal width */
background: #ccc
}
ol > li {
display: table-cell;
border: 1px dashed red;
text-align: center
}
like here: http://jsfiddle.net/QzYAr/
One way I've found to do it is using flex boxes (or inline-flex).
Here is a great explanation and example of how it can be done.
I think in the future, flex boxes will be the superior way of handling this sort of thing, but until other browsers catch up with Mozilla's way of thinking for how to use the flex-basis attribute (with min-content, max-content, fit-content, etc. as values), these flex boxes will continue to be problematic for responsive designs. For example, occasionally the inner content (a_really_really_long_word) can't fit in the allotted space when the window is squished down, and so sometimes some things might not be visible off to the right of the screen if you're not careful.
I think perhaps if you make use of the flex-wrap property, you might be able to ensure everything fits. Here is another example of how this might be done (in Mozilla browsers anyway).
I tend to use flex boxes for letterheads or tables where the width is fairly fixed (not too small) because they usually space themselves nicely; I tend to use nested float and inline-block objects for websites where the content must squish down very small (as suggested in some of the other answers here).

CSS: expression ( use percentage & pixels to calculate )

i want to set the width of the DIV like
( 100% - 10px )
using CSS expression but have been failing can somebody tell me what is the answer to that
You can't do that unfortunatly, and it can be annoying because you do run into instances where it would be great.
You can use Javascript to work out pixel widths of elements, but this gets messy and very complicated to manage very quickly.
My recommendation is go back to the drawing board and redesign your layout to work around this issue.
If you post specific examples we might be able to help.
You can do exactly this today with CSS3's calc function.
width: calc(100% - 10px);
you could use javascript to get the actual width of the div when you have it at 100% and then reduce it by 10(might i recommend jquery as a greate framework to work with when it comes to javascript), another thing would create a wrapping div with overflow:hidden; and that's 100% and then you apply 100% to the inside div too and add left:-10px; to it, it will create desired effect
Can you give a more concrete example? Just without any more details it seems you just need a left or right margin of 10px on an block element with default (auto) width.

Is there a way to specify overflow in CSS?

I have been using a lot of position:relative; in my design, I just find it the easiest way to get everything where I need them to be.
However, the more items I add on my site (each one with their individual div) each one ends up further and further at the bottom of my page, so I have to manually position them higher.
This leaves a lot of empty space at the bottom, and I thought that adding height: 1000px; would limit the scrolling a bit, but this method doesn't seem to work.
I've even tried adding height: 1000px; to the wrapper and it's still not working.
How can I limit vertical scrolling, to the number of pixels I choose?
Thanks so much in advance.
Wait, so you are creating a div, using position relative to move the content of the div to the correct location, and the issue being that the div tag itself is still in the same place and creating a vertical scroll even though there is no content there?
If so you should look into floats.
Here are some tutorials.
Floatutorial
Learn CSS Positioning in Ten Steps
You can specify both the height and the overflow:
.someClass
{
height:1000px;
overflow:scroll;
}
The most common values for overflow are scroll, auto, and hidden.
To limit the distance someone can scroll, I think you'd need to use JavaScript. I'm not sure how, but I can't think of anything in CSS that would do that.
If you are looking to set when something should scroll instead of just be cut off or expand the tag, use overflow:auto;.

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