Build Custom Frameworks Easily with CSS Classes

Published March 10, 2009 by CSS Newbies.

Woodsmith Shop columns

Generally speaking, I consider full-fledged CSS frameworks to be overkill on all but the most absolutely complex projects or, on the other end of the spectrum, rapid proof-of-concept prototyping. Most people only use a few of the classes that any one CSS framework provides, but then still require their users to download the entire, and largely unused, stylesheet.

However, I still think that the foundation on which CSS frameworks are built — the concept of using classes to simplify layout and standardize design across similar elements — is very much worth investigation. But instead of relying on a one-size-fits-all (snuggie-esque?) solution, I’d encourage you to take a few minutes and build a custom, simplified framework that does exactly what you need it to do.

The Back Story

I recently built a website based on a fairly regular, consistent grid. The content area was 780px wide and would contain six “columns” of content with 12-pixel gutters between each of the columns, though various elements could span one or more of those columns.

sample content layouts in a six-column grid

Because of the general flexibility of the content combined with the rigidity of the columnar structure, my mind immediately jumped to frameworks as a way to get this design pushed out in a hurry. But in the end, I just couldn’t justify all that overhead, even to create a flexible six-column design. So instead, I decided to write my own mini-framework to do only what I needed.

The Custom Framework

Here’s the basic CSS I ended up writing:

.col {
	float: left; }
.gutter {
	margin-right: 12px; }
.span1 {
	width: 120px; }
.span2 {
	width: 252px; }
.span3 {
	width: 384px; }
.span4 {
	width: 516px; }
.span5 {
	width: 648px; }
.span6 {
	width: 780px; }
.clear {
	clear: left; }

Pretty simple stuff, right? All it contains is nine classes that I can arbitrarily assign to my structural divs to determine how the page will lay out. The first class, “col”, gets assigned to any div I want to behave like a column.

Then each column is given one of the “span” classes (using the benefit of multiple CSS classes to great effect) to determine its width — or as I thought of it at the time, the number of columns the div would span… just like using “colspan” in old-school table layouts.

Next up we have the “gutter” class, which I add to any column that should have a gutter along its right edge (which would be true for all columns except those along the very right edge of my content area). And finally, there’s a “clear” class, just to ensure that my divs behave themselves even if I didn’t entirely fill up the previous “row” of divs.

The XHTML Structure

There’s not much to the XHMTL structure for my custom framework. Essentially, it’s a bunch of divs given two or more of my nine classes to determine its behavior. For example, to create the 4-2/2-1-3 structure I highlighted in the image above, this would be the structure:

<div class="col span4 gutter">Four columns</div>
<div class="col span2">Two columns here</div>
<div class="col span2 gutter">Two cols and a gutter</div>
<div class="col span1 gutter">Only 120px!</div>
<div class="col span3">Three columns.</div>

If you’d like to see this sort of custom framework in action, it’s running on the website for the Woodsmith Shop TV show.

One Size Doesn’t Fit All

Now, I’m not saying my framework is the end-all CSS framework and that you should just copy it wholesale into your own project and expect it to work perfectly. The idea here is to take this concept and come up with a custom framework that works perfectly for your needs.

The real take-away lesson here is that for most projects, you don’t need dozens of classes and hundreds of lines of CSS just to create a flexible grid structure. I created mine with just nine CSS classes and it was sufficient to power my six-column grid. I’d be interested to see what other people (namely, you) have come up with along these same lines. Share a link in the comments!

12 Responses

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  5. Sean (reply)

    Never thought about putting the gutter in it’s own class. Much better idea than doing a “last” class that removes a built-in gutter.

    If I might make a couple of suggestions, though. Name your col class something like .float-left, and your clear class to .clear-left.

    This gives you the ability to use them in other places other than framework, and gives you a descriptive name so that you can remember what they were doing later on.

  6. Rob Glazebrook (Author) (reply)

    Hi Steven,

    I can do it because I’ve never downloaded the Blueprint framework, and thus have no idea how they do what they do.

    And now that I’ve downloaded it for a reference point, I can see that by “shamelessly copied,” you mean that they also used the word “span” to create widths (though theirs are written differently), meaning I wasn’t the first person on earth to conceive of a correlation between a colspan and a grid span. Mind boggling stuff.

    Many frameworks share a lot of elements in common, since they’re trying to accomplish the same fundamental ends. For example, I guarantee that the YUI grid system uses the width property (though I’ve never downloaded it either). So by your logic, Blueprint is a ripoff of them, correct?

    Bare minimum I would say that mine is different because it contains 9 rules, whereas theirs contains 240 rules. Or possibly because mine isn’t meant to be a standalone framework at all, but rather a starting point from which others can build their own framework (and thus understand how the framework works) instead of just grabbing someone else’s code and running. Had you actually stopped to read my article instead of skipping to the code, noticing a similarity, and then jumping to conclusions, you would have realized that was my whole point to begin with.

    Thanks for playing,

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  8. RobShaver (reply)

    I’ve looked at other CSS frameworks but they seem to complex. I like you’rs for it’s simplicity.

    Since the col class appears in every div, why not just include the float:left in the span classes? Just a thought. I’m new at this so maybe there’s some example to keep the flexibility of having it separate.

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