Think Vitamin CSS

THE WHY, HOW, AND WHEN?
of

CSS FRAMEWORKS
http://thinkvitamin.com/online-conferences/

Just a brief intro, then we’ll
dig right into the good stuﬀ...
I’m Nathan. I am a designer
(slash) front-end developer
at Fellowship Technologies.

http://fellowshiptech.com/

You probably know me as
the guy who made this...

http://960.gs/

But I’m not (entirely) one dimensional.
Today, I we are going to discuss some
of the beneﬁts (and drawbacks) of
using CSS frameworks such as...

Blueprint, YUI 3,
960.gs, 1kb Grid

“Any suﬃciently advanced technology
is indistinguishable from magic.”
this scares me
— Arthur C. Clarke

http://en.wikipedia.org/wiki/Clarke's_three_laws

You know why? CSS frameworks are
not magic. Because CSS itself isn’t.
Let’s not treat code like it’s mystical.
(Same for jQuery. But that’s another soapbox entirely.)

Veteran “ninjas” master a variety of tools – Not just one.

FRAMEWORK
BY H
AND

Use a framework as an extension
of yourself – Not just as a crutch.

http://imdb.com/title/tt1046173/

WHY use a Framework?
+ Increase eﬃciency + Ease of maintenance
+ Code consistency + Repeatable process
+ Browser tested + CMS driven templates

WHY not?
– Learning curve – Code feels foreign
– Bloated HTML – Longhand is quicker?
– Bloated CSS – Unsemantic classes

I have found that many of those who cry “bloat” (as a reason not to use
frameworks) are themselves guilty of not doing all they can to reduce
client-side latency. For instance, referencing multiple CSS files of the
same media type is wasteful because it necessitates an HTTP request
for each file, thereby delaying page rendering until all the files have
been downloaded and parsed. Additionally, whitespace can quickly
add up: newline characters, tabbed (or spaced) indentation, etc...
— Nathan Smith (.Net Magazine July 2010)

... Regardless of if you are using a CSS framework, you can and
should be using techniques to mitigate the impact of CSS
downloads, including miniﬁcation and concatenation – two fancy
terms that simply refer to the removal of unnecessary whitespace,
and combining multiple CSS ﬁles into one... If you want to minify
your CSS manually, I would recommend CSS Drive’s compressor.
— Nathan Smith (.Net Magazine July 2010)

http://www.cssdrive.com/index.php/main/csscompressor/

DIV + SPAN ARE SEMANTICALLY MEANINGLESS (aka NEUTRAL)

The div and span elements, in conjunction with the id
and class attributes, oﬀer a generic mechanism for
adding structure to documents. These elements deﬁne
content to be inline (span) or block-level (div) but
impose no other presentational idioms on the content.
— World Wide Web Consortium (W3C)

http://www.w3.org/TR/html401/struct/global.html#h-7.5.4

“Semantic Web” doesn’t involve CSS

http://www.w3.org/DesignIssues/Semantic.html

SORRY CSS... YOU WEREN’T INVITED TO THIS PARTY. WE STILL YOU.

The term “Semantic Web” refers to W3C’s vision of the Web
of linked data. Semantic Web technologies enable people to
create data stores on the Web, build vocabularies, and write
rules for handling data. Linked data are empowered by
technologies such as RDF, SPARQL, OWL, and SKOS.
— World Wide Web Consortium (W3C)

http://www.w3.org/standards/semanticweb/

DIV + ID / CLASS = ZERO SEMANTIC VALUE HTML5 TAGS = RICH SEMANTIC VALUE

<div class="header"> <header>
... ...
</div> </header>
<div class="nav"> <nav>
... ...
</div> </nav>
<div class="article"> <article>
... ...
</div> </article>
<div class="footer"> <footer>
... ...
</div> </footer>

Semantics live here

<tag class="peanut_butter jelly">Yummy content</tag>

Not here

If semantics keep you up at night... try SASS!

http://sass-lang.com/

Now that the ranting is done...

HOW
do I use a CSS framework?

CSS Framework Comparison Matrix – Sounds really oﬃcial, huh?
Grid Typography PSD ﬁles Form styles Print styles “Plugins” RTL lang

Blueprint ✓ ✓ ✓ ✓ ✓ ✓ ✓

YUI ✓ ✓ ✓ ✓ ✓ ✓

960.gs ✓ ✓ ✓* ✓

1KB Grid ✓

* The 960 Grid System has templates for...
+ Acorn + Corel DRAW
+ Adobe Fireworks + Expression Design
+ Adobe Flash + GIMP
+ Adobe InDesign + InkScape
+ Adobe Illustrator + OmniGraﬄe
+ Adobe Photoshop + Visio

... and printable PDF sketch sheets.

http://960.gs/

Example of Blueprint HTML
<div class="container">
<div class="span-8">
1/3 width
</div>
1/3 width
</div>
<div class="span-8 last">
1/3 width
</div>
1/8 width
</div>
1/4 width
</div>
</div>
<div class="span-6 prepend-3 append-3 last">
1/4 width
</div>
</div>
</div>

http://blueprintcss.org/

Comparable example of 960.gs HTML (24-col)
<div class="container_24">
<div class="grid_8">
1/3 width
</div>
1/3 width
</div>
1/3 width
</div>
<div class="grid_6 alpha">
1/8 width
</div>
<div class="grid_6 omega">
1/4 width
</div>
</div>
<div class="grid_6 prefix_3 suffix_3 alpha omega">
1/4 width
</div>
</div>
</div>

http://960.gs/

Example of Blueprint CSS
.span-1, .pull-1,
.span-2, .pull-2,
... { ... {
float: left; float: left;
margin-right: 10px; position:relative;
} }

.span-1 { .pull-1 {
width: 30px; margin-left: -40px;
} }

.prepend-1 { .push-1,
padding-left: 40px; .push-2,
} ... {
float: right;
.append-1 { position:relative;
padding-right: 40px; }
}
.push-1 {
.last { margin: 0 -40px 1.5em 40px;
margin-right: 0; }
}


Example of 960.gs CSS (24-col)
.container_24 .grid_1, .push_1,
.container_24 .grid_2, .pull_1,
... { .push_2,
display: inline; .pull_2 {
float: left; position: relative;
margin-left: 5px; }
margin-right: 5px;
} .container_24 .push_1 {
left: 40px;
.container_24 .grid_1 { }
width: 30px;
} .container_24 .pull_1 {
right: 40px;
.container_24 .prefix_1 { }
padding-left: 40px;
}

.container_24 .suffix_1 {
padding-right: 40px; Note: Whereas Blueprint’s push + pull
}
classes are used for content (oﬀset
.alpha {
margin-left: 0; images / quotes), the push + pull classes
}
in 960.gs are used to rearrange entire
.omega {

}
margin-right: 0; columns, independent of source order.
This has practical implications for SEO.

http://960.gs/

960 (24-COL) GRID DIMENSIONS – What’s the diﬀerence? Glad you asked...

Blueprint’s text can touch left / right edge of browser. Troublesome on mobile.

960.gs has a 5px (24-col) or 10px (12, 16-col) buﬀer on left / right side.

YUI 3’s grid is ﬂuid. It doesn’t use any ﬂoats. WHAT!?
<div class="container">
<div class="yui3-g">
<div class="yui3-u-1-2">
1/2 width
</div>
1/2 width
</div>
</div>
<div class="yui3-g">
1/24 width
</div>
23/24 width
</div>
</div>
</div>

http://developer.yahoo.com/yui/3/

.yui3-g {
/* webkit: collapse white-space
between units */

Example of YUI 3 Grid CSS
letter-spacing: -0.31em;
/* reset IE < 8 */
*letter-spacing: normal;
/* IE < 8 && gecko: collapse
white-space between units */
word-spacing: -0.43em;
} Note: Because nothing is floated in YUI,
this means that no additional files are
.yui3-u,
.yui3-u-1, needed in order to support languages that
.yui3-u-1-2,
... {
display: inline-block;
read right-to-left (Hebrew, Arabic, etc).
/* IE < 8: fake inline-block */
zoom: 1; *display: inline;
letter-spacing: normal;
word-spacing: normal;
But because everything is essentially
}
vertical-align: top;
display: inline-block, and is fluid width,
.yui3-u-1 { this also means columns cannot be
display: block;
} rearranged for SEO purposes. Additionally,
.yui3-u-1-2 { an extra wrapping <div> is required to
width: 50%;
} create gutters between content areas.
.yui3-u-1-3 {
width: 33.33333%;
}


BROWSER ROUNDING
% INCONSISTENCIES

http://host.sonspring.com/yui3_grid/

1KB Grid – Entire CSS ﬁle!
.grid_1 { width:60px; }
.grid_7
.grid_8
{
{
width:540px;
width:620px;
}
}
The 1KB Grid has everything you
.grid_9
.grid_10
{
{
width:700px;
width:780px;
}
}
need, and nothing you don’t.

.column { Okay, maybe it doesn’t have everything
margin: 0 10px;
overflow: hidden; you need. It is – after all – less than 1
float: left;
display: inline; kilobyte of code, so it can’t do it all.
}

.row {
width: 960px;
margin: 0 auto;
No right-to-left support. No SEO column
}
overflow: hidden; re-ordering. But it is incredibly eﬃcient!
.row .row {
margin: 0 -10px;
width: auto;
The 960 Grid System is 5.5KB. You can
}
display: inline-block;
think of the 1KB Grid as a “lite” version.

http://1kbgrid.com/

Example of 1KB Grid HTML
<div class="row">
<div class="column grid_6">
<div class="row">
1/2 width
</div>
</div>
<div class="row">
1/6 width
</div>
1/6 width
</div>
1/6 width
</div>
</div>
</div>
1/2 width
</div>
</div>

http://1kbgrid.com/

So which CSS framework is the best? It depends...
+ What size site are you building?
+ Are you working alone or with a team?
+ Is pixel precision a make-or-break factor?
+ Do you need right-to-left language support?
+ Is your layout complex enough to merit SEO?
+ Do you want ready-made design or just a grid?

YUI 3.0 Grid
Pros: Cons:
+ Fluid (or ﬁxed) Width – Source dependent layout
+ Easy RTL support – No gutters by default
+ Tested by Yahoo! devs – Rounding % inconsistencies
+ Part of a larger ecosystem

Use when:
You need a ﬂexible layout, and when a margin of error ± a few pixels is acceptable.


Blueprint
Pros: Cons:
+ Ruby build scripts – Source dependent layout
+ Form, button, tab “plugins” – No outer gutters by default
+ Extensive typography – Design presuppositions
+ Print stylesheet (could be a positive though)

Use when:
You want a design that is ready to go “out of the box” with many of the default
details handled for you by default. You want to generate grids via Ruby scripts.


960.gs
Pros: Cons:
+ 12, 16, or 24 column grids – Less features than YUI / BP
+ PS + FW plugins, templates – Focuses solely on grids
+ Possible SEO benefits (could be a positive though)
+ IA, Designer, Dev friendly

Use when:
Building a site with layouts driven by a CMS. If you are doing rapid prototyping
or have IA > Designer > Dev workflow. Want layout to differ from source order.

http://960.gs/

1KB Grid
Pros: Cons:
+ Handy grid generator tool – Source dependent layout
+ Easy to get started – Features < than YUI / BP / 960
+ Lightweight code – Focuses solely on grids
+ No extra nesting classes (could be a positive though)

Use when:
You are building a site that needs a grid layout, but the site’s requirements do not
necessitate the overhead of a robust CSS framework. Or code size is a concern.

http://1kbgrid.com/

So, others’ frameworks are ﬁne, but...

WHEN
should I roll my own framework?

When to build your own...
✓ You have a speciﬁc need no other framework addresses
✓ You require a grid that is atypical of common frameworks
✓ To try your hand at architecting something others may use

Pros: Cons:
+ 100% control over code – Debugging is all your burden
+ Build only what you need – Re-inventing the wheel?

5 Simple Steps to Designing Grid Systems
A ﬁve-part series by Mark Boulton.

http://www.markboulton.co.uk/journal/comments/ﬁve-simple-steps-to-designing-grid-systems-part-1

Mark Boulton’s publishing company – Five Simple Steps

http://ﬁvesimplesteps.com/

“Grid computing... and Design” – by Khoi Vinh
http://www.subtraction.com/2004/12/31/grid-computi

http://www.cameronmoll.com/archives/2006/12/gridding_the_960/

FURTHER READING...
Frameworks for Designers – Jeﬀ Croft
— http://alistapart.com/articles/frameworksfordesigners

Smart CSS ain’t always sexy CSS – Martin Ringlein
— http://digital-web.com/articles/smart_CSS_aint_always_sexy_CSS/

Object Oriented CSS – Nicole Sullivan
— http://wiki.github.com/stubbornella/oocss/

Questions?
— http://twitter.com/nathansmith
— http://sonspring.com/contact

Get the slides...
— http://slideshare.net/nathansmith/think-vitamin-css

Think Vitamin CSS

More Related Content

What's hot

Viewers also liked

Similar to Think Vitamin CSS

More from Nathan Smith

Recently uploaded

Think Vitamin CSS