CSS Power Tools
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WISH CSS
TOOLSFriday, November 11, 2011
@STUBBORNELLAWhat CSS tool would you love to have?
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GITHUB.COMfree for open source projects
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FRAMEWORKSorganize code into logical abstractions
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GRIDSAbstract layout, remove
duplication, improve performance
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GRIDS OOCSS
http://www.stubbornella.org/content/2011/01/22/grids-improve-site-performance/Friday, November 11, 2011
MEDIA BLOCK EXAMPLE
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ALL OF THESE ARE THE SAME OBJECT
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WHAT DO WE KNOW?
❖ Can be nested❖ Optional right button❖ Must clearfix
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WHAT DON’T WE KNOW?
❖ Image width and decoration vary❖ Right content is unknown❖ Width unknown
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SEPARATE STRUCTURE FROM CHROME
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A FEW LINES OF HTML...
<div class="media attribution"> <a href="http://twitter.com/stubbornella" class="img"> <img src="mini.jpg" alt="Stubbornella" /> </a> <div class="bd">@Stubbornella 14 minutes ago</div></div>
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4 LINES OF CSS...
_
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HTML SIZEreduced by 50%
by Stefan Parker
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“Due to these efforts, we cut our average
CSS bytes per page by 19% (after gzip) and
HTML bytes per page by 44% (before gzip).”
Jason Sobelhttp://www.facebook.com/note.php?note_id=307069903919
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GET THE MEDIA BLOCK:https://github.com/stubbornella/oocss/tree/master/core/media
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PREPROCESSORSserver-side CSS language additions
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Mixins are for classes that are too presentational
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ExtendsTell one selector to inherit all the styles of another without duplicating the CSS properties.
.message { border: 1px solid #f00; background: #fdd;}.error { @extend .message; border-color: red; background-color: red;}
.warn { @extend .message; border-color: yellow;}
.message, .error, .warn { border: 1px solid #f00; background: #fdd;}.error { border-color: red; background-color: red;}
.warn { border-color: yellow;}
// SASS // compiled CSS
Extends adds structure to your CSS
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GRADIENT TOOLSmake converting sites to CSS3 so much faster
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by Lea VerouFriday, November 11, 2011
but the syntax is very very ugly, and unstable
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COLORZILLA TOOLhttp://www.colorzilla.com/gradient-editor/
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CHROME DEV TOOLSare the new firebug
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NORMALIZE.CSSis the new reset
A project by Nicolas Gallagher and Jonathan Neal.
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HOW MANY PEOPLE HAVE TRIED A RESET STYLESHEET?
like the one by Eric Meyer or in YUI
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THE GOAL IS TO HAVE THE SAME STYLES
across all browsers
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by James Butler - http://www.flickr.com/photos/slimjim/5004687965/
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IT’S NOT THAT YOU
CAN’Tbut it might be overkill?
By Kevin Walsh - http://www.flickr.com/photos/kev_walsh/2216144544/Friday, November 11, 2011
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CSS LINTbeyond validation
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THE FLAVOR OF DUPLICATION
Find yours and you’ll find your solution.
http://www.flickr.com/photos/the_justified_sinner/4694158195/sizes/l/in/photostream/
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CHOOSE THE RULES RELEVANT TO YOU
Our goal is to allow custom rulesets, for example, the Salesforce.com custom rules, or special rules for your blog
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OUTPUTsearchable, sortable
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ERRORS HIGHLIGHTED IN CONTEXT
In this case, don’t use !important
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MAKE UP YOUR OWN RULES!
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EASIER THAN YOU THINK!
1. Download source from: github.com/stubbornella/csslint
2. Find a rule that does something similar to what you want to do. e.g. the rule tests for a property value pair and you want to test for a different property and value
3. Copy! Seriously.
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TEXT-INDENT EXAMPLE
Add the rule to CSS Lint
Name the rule, and give
it an id
Describe the rule
Tell CSS Lint which browsers
are affected.
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TEXT-INDENT EXAMPLE
Make the rule listen to the parts of the
stylesheet you care about. In this case,
properties.
Try:• startstylesheet, • endstylesheet, • startrule, • endrule, etc
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TEXT-INDENT EXAMPLE
Get the property And the value
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TEXT-INDENT EXAMPLETest if the property is
text-indentAnd the value is less than -99
If text indent is being used to hide text, send the reporter a message that it may
fail in RTL languages.
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TEXT-INDENT EXAMPLE
Make sure to tell CSS Lint the line, column, and rule so the
user can find their error.
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WRITE TESTS FOR YOUR TEST ;)
This helps everyone work together.
Give CSS Lint some CSS to test
Tell us how many errors are in that
CSS.
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USE CSS LINT TO TEST FOR DUPLICATION
• floats
• headings
• font-sizes
• color values coming soon!
• padding & margins coming soon!
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BUILD AND SHARE TOOLS THAT YOU WANT TO EXIST!
you’ll learn so much from open source.
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http://stubbornella.org@stubbornella
http://github.com/stubbornella/oocss/http://groups.google.com/group/object-oriented-css
LET’S KEEP TALKING...
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