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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>deck</title>
<meta name="description" content="A framework for easily creating beautiful presentations using HTML">
<meta name="author" content="Hakim El Hattab">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<link rel="stylesheet" href="http://static2.meetupstatic.com/fonts/whitney.css">
<link rel="stylesheet" href="css/reveal.min.css">
<link rel="stylesheet" href="css/theme/default.css" id="theme">
<link rel="stylesheet" href="css/custom.css" id="theme">
<!-- For syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<!-- If the query includes 'print-pdf', use the PDF print sheet -->
<script>
document.write( '<link rel="stylesheet" href="css/print/' + ( window.location.search.match( /print-pdf/gi ) ? 'pdf' : 'paper' ) + '.css" type="text/css" media="print">' );
</script>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section data-markdown data-background="#222" class="sassy--color">
<script type="text/template">
# Let's talk about CSS*!
*and Sass
</script>
</section>
<section class="meetup-intro" data-background="img/billboard.jpg" data-transition="fade">
<p style="padding-bottom: 8px;">I'm Adam Detrick and I work for Meetup</p>
<p style="padding-top: 0px;" class="sassy--color">[email protected] | @akdetrick</p>
</section>
<section data-background="#666">
<section data-background="#666">
<h2>an opening thought...</h2>
</section>
<section data-background="#fff">
<img src="img/takashi_tweet.png" style="width: 100%; border-width: 0;" />
</section>
</section>
<section data-background="#222">
<h3>CSS problems at Meetup</h3>
<ul>
<li class="fragment">
meetup is over 10 years old
<ul>
<li class="fragment">~1000 jsp files</li>
<li class="fragment">~180 scss files</li>
<li class="fragment">over 2000 instacnes of "color:" in compiled css</li>
</ul>
</li>
<li class="fragment">we hit the css limit in internet explorer</li>
<li class="fragment">lots of engineers; potential for inconsistency</li>
<li class="fragment">we went years without dedicated designers</li>
</ul>
</section>
<section data-background="#222">
<h3>Some CSS problems are not<br />unique to Meetup</h3>
<ul>
<li class="fragment">design consistency</li>
<li class="fragment">reinventing solutions to problems that <br />have already been solved</li>
<li class="fragment">overly-specific (and hard to reuse) CSS</li>
<li class="fragment">lack of a canonnical way to accomplish a given task</li>
<li class="fragment">existing code is hard to document</li>
<li class="fragment">unending cycle of code bloat</li>
</ul>
</section>
<section data-background="#222">
<h2>Let's throw out this crap and rewrite everything!</h2>
</section>
<section data-background="#222">
<img src="img/tsc_home.png" class="fragment" style="border-width: 0;" />
</section>
<section data-background="#222">
<img src="img/tsc1.png" style="border-width: 0;" />
</section>
<section data-background="#222">
<img src="img/tsc2.png" style="border-width: 0;" />
</section>
<section data-background="#222">
<h2>"It will only take <br />a few months"</h2>
</section>
<section data-background="#222">
<h2>Starting clean is<br />not a solution</h2>
<p class="fragment">... and it's frustrating</p>
</section>
<section data-markdown>
<script type="text/template">
## Let's talk about botany for a moment
</script>
</section>
<section data-background="#000">
<section data-markdown>
<script type="text/template">
## Strangler Vines
Tropical plants that grow on host trees
</script>
</section>
<section data-background="http://farm9.staticflickr.com/8205/8251868992_c9a35bf025_h.jpg" data-background-size="contain" data-background-transition="slide">
<p class="attribution">flickr/edrabbit</p>
</section>
<section data-background="http://farm4.staticflickr.com/3503/3828905896_e13528bbbf_b.jpg" data-background-size="contain" data-background-transition="slide">
<p class="attribution">flickr/nancybaym</p>
</section>
<section data-background="http://farm2.staticflickr.com/1040/956891083_ceba98c386_o.jpg" data-background-size="contain" data-background-transition="slide">
<p class="attribution">flickr/laughingface</p>
</section>
<section data-background="http://farm6.staticflickr.com/5018/5501316782_4be0a28ccf_b.jpg" data-background-size="contain" data-background-transition="slide">
<p class="attribution">flickr/anitagould</p>
</section>
</section>
<section data-markdown>
<script type="text/template">
## The Strangler Pattern
As introduced by [Martin Fowler](http://martinfowler.com/bliki/StranglerApplication.html)
</script>
</section>
<section data-markdown class="align-left">
<script type="text/template">
> "... create a new system around the edges of the old, letting it grow slowly until the old system is strangled."
</script>
</section>
<section data-markdown class="align-left">
<script type="text/template">
> "... you should design [your new application] to make it easier to be strangled in the future."
> "Let's face it, all we are doing is writing tomorrow's legacy software today."
</script>
</section>
<section>
<h2>What about CSS?</h2>
</section>
<section>
<h2>A successful strangler application needs...</h2>
<ul>
<li class="fragment">A way to introduce a new system without breaking the current one</li>
<li class="fragment">The ability to make incremental changes to replace legacy code</li>
</ul>
</section>
<section>
<hgroup>
<h1>C<span class="fragment fade-out">SS</span></h1>
<h2 class="fragment">is for cascade</h2>
</hgroup>
</section>
<section>
<h2>Strangling CSS</h2>
<p>"Seed" the top of your cascade with a new CSS foundation</p>
<div class="document-figure">
<div class="document-line--focus" style="line-height: 5;">New CSS Foundation</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
</div>
</section>
<section>
<section data-transition="fade">
<div class="figureset">
<div class="figureset-figure document-figure">
<div class="document-line--focus" style="line-height: 23;">New CSS Foundation</div>
</div>
<div class="figureset-description">
<h3>Foundation?</h3>
</div>
</div>
</section>
<section data-transition="fade">
<div class="figureset">
<div class="figureset-figure document-figure">
<div class="document-line--focus" style="line-height: 4;">util (if pre-processing)</div>
<div class="document-line" style="line-height: 4;">element defaults</div>
<div class="document-line" style="line-height: 4;">layout system</div>
<div class="document-line" style="line-height: 4;">common patterns/components</div>
<div class="document-line" style="line-height: 4;">modifiers</div>
</div>
<div class="figureset-description">
<h4>Sass utilities</h4>
<p>vars, functions, etc.</p>
</div>
</div>
</section>
<section data-transition="fade">
<div class="figureset">
<div class="figureset-figure document-figure">
<div class="document-line" style="line-height: 4;">util (if pre-processing)</div>
<div class="document-line--focus" style="line-height: 4;">element defaults</div>
<div class="document-line" style="line-height: 4;">layout system</div>
<div class="document-line" style="line-height: 4;">common patterns/components</div>
<div class="document-line" style="line-height: 4;">modifiers</div>
</div>
<div class="figureset-description">
<h4>Custom "normalize" css</h4>
<p>handles element defaults, typography, etc.</p>
</div>
</div>
</section>
<section data-transition="fade">
<div class="figureset">
<div class="figureset-figure document-figure">
<div class="document-line" style="line-height: 4;">util (if pre-processing)</div>
<div class="document-line" style="line-height: 4;">element defaults</div>
<div class="document-line--focus" style="line-height: 4;">layout system</div>
<div class="document-line" style="line-height: 4;">common patterns/components</div>
<div class="document-line" style="line-height: 4;">modifiers</div>
</div>
<div class="figureset-description">
<h4>A basic layout system</h4>
<p>oocss grids, responsive grid system, susy, etc.</p>
</div>
</div>
</section>
<section data-transition="fade">
<div class="figureset">
<div class="figureset-figure document-figure">
<div class="document-line" style="line-height: 4;">util (if pre-processing)</div>
<div class="document-line" style="line-height: 4;">element defaults</div>
<div class="document-line" style="line-height: 4;">layout system</div>
<div class="document-line--focus" style="line-height: 4;">common patterns/components</div>
<div class="document-line" style="line-height: 4;">modifiers</div>
</div>
<div class="figureset-description">
<h4>Common markup & style patterns</h4>
<p>media blocks, special lists, etc.</p>
<p><em>ie. <a href="http://codepen.io/akdetrick/full/gltbd">figureset</a></em></p>
</div>
</div>
</section>
<section data-transition="fade">
<div class="figureset">
<div class="figureset-figure document-figure">
<div class="document-line" style="line-height: 4;">util (if pre-processing)</div>
<div class="document-line" style="line-height: 4;">element defaults</div>
<div class="document-line" style="line-height: 4;">layout system</div>
<div class="document-line" style="line-height: 4;">common patterns/components</div>
<div class="document-line--focus" style="line-height: 4;">modifiers</div>
</div>
<div class="figureset-description">
<h4>Modifier classes</h4>
<p>simple, standard styling helpers</p>
<hr />
<div data-markdown>
<script type="text/template">
``` css
.leading-top { padding-top: $spacing; }
```
``` css
.ellipsize {
display: block;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
```
</script>
</div>
</div>
</section>
</section>
<section>
<p>What happens to legacy CSS?</p>
<div class="document-figure">
<div class="document-line" style="line-height: 5;">New CSS Foundation</div>
<div class="document-line--focus">legacy</div>
<div class="document-line--focus">legacy</div>
<div class="document-line--focus">legacy</div>
<div class="document-line--focus">legacy</div>
<div class="document-line--focus">legacy</div>
<div class="document-line--focus">legacy</div>
<div class="document-line--focus">legacy</div>
</div>
</section>
<section>
<section data-markdown data-transition="linear">
<script type="text/template">
### Growing your strangler vines
</script>
</section>
<section data-markdown data-transition="linear">
<script type="text/template">
#### Markup
``` html
<div id="mySpecialThing">
<div id="specialThingHeading">
It's special.
</div>
<div id="specialThingContent">
<span>Really</span> special.
</div>
</div>
```
----
``` html
<h2>
It's not special.
</h2>
<p>
It just <em>makes sense</em> now.
</p>
```
</script>
</section>
<section data-markdown data-transition="linear">
<script type="text/template">
#### CSS
``` css
#mySpecialThing {
/* ... bunch o' rules ... */
}
#specialThingHeading {
/* ... bunch o' rules ... */
}
#specialThingContent {
/* ... bunch o' rules ... */
}
#specialThingContent span {
/* ... bunch o' rules ... */
}
```
----
``` css
/* lol, nope */
```
</script>
</section>
<section data-transition="fade">
<h4>You're able to start deleting legacy CSS...</h4>
<div class="document-figure">
<div class="document-line" style="line-height: 5;">New CSS Foundation</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line--focus">deleted legacy component</div>
</div>
</section>
<section data-transition="fade">
<h4>As you repeat this process...</h4>
<div class="document-figure">
<div class="document-line" style="line-height: 5;">New CSS Foundation</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line--focus">deleted legacy component</div>
</div>
</section>
<section data-transition="fade">
<h4>More and more of the legacy CSS goes away...</h4>
<div class="document-figure">
<div class="document-line--focus" style="line-height: 5;">New CSS Foundation</div>
<div class="document-line">legacy</div>
<div class="document-line">legacy</div>
<div class="document-line--focus">deleted legacy component</div>
</div>
</section>
<section data-transition="fade">
<h4>Eventually leaving you with something more like this:</h4>
<div class="document-figure">
<div class="document-line--focus" style="line-height: 5;">New CSS Foundation</div>
<div class="document-line" style="line-height: 3;">Custom CSS</div>
</div>
</section>
</section>
<section data-markdown data-background="#222">
<script type="tect/template">
## Building the foundation
</script>
</section>
<section data-markdown data-background="#222">
<script type="text/template">
### Design + Code 4 eva
_design_ for systems, not for pages
----
_code_ for systems, not for pages
</script>
</section>
<section data-markdown data-background="#222">
<script type="text/template">
### Style tiles
[http://styletil.es/](http://styletil.es/)
</script>
</section>
<section data-markdown data-background="#222">
<script type="text/template">
### Type speicimens
[meetup type specimen](http://meetup.github.io/sassquatch/specimen.html)
</script>
</section>
<section data-markdown data-background="#222">
<script type="text/template">
### Element defaults
``` css
$headingFontStack: 'Whitney', helvetica, arial, sans-serif;
h1,h2,h3,h4,h5,h6 {
font-family: $headingFontStack;
color: $C_textPrimary;
margin: 0;
padding: 0;
padding-bottom: $baseline/2;
line-height: 1.1;
font-weight: $W_bold;
.inverted & {
color: $C_textPrimaryInverted;
}
}
```
</script>
</section>
<section data-markdown data-background="#9f1627" class="sq">
<script type="text/template">
## Meet Sassquatch
</script>
</section>
<section data-markdown data-background="#9f1627" class="sq">
<script type="text/template">
### A CSS foundation for Meetup
(we use this as our strangler vine)
</script>
</section>
<section>
<h3>Demo Time</h3>
<p><a href="http://meetup.github.io/sassquatch/">Live style guide (jekyll)</a></p>
<p><a href="http://meetup.github.io/sassquatch/doc_desktop/">Live style guide (hologram)</a></p>
<p><a href="http://meetup.github.io/sassquatch/specimen-event.html">Mock event details</a></p>
<p><a href="http://meetup.github.io/sassquatch/tests/brightness.html">Visual tests</a></p>
</section>
<section>
<h3>Let's look at some <a href="https://github.com/meetup/sassquatch">Code</a></h3>
</section>
<section>
<h3>_crustybase.scss</h3>
</section>
<section data-markdown>
<script type="text/template">
### Killing 300kb of CSS,<br />one page at a time
``` jsp
<jsp:param name="isModernLayout" value="${true}" />
```
-----
``` jsp
<c:choose>
<c:when test="${not empty param.isModernLayout}">
<c:set var="mainStylesheetPath" value="/style/meetup-modern.css" />
</c:when>
<c:otherwise>
<c:set var="mainStylesheetPath" value="/style/meetup.css" />
</c:otherwise>
</c:choose>
```
</script>
</section>
<section data-markdown>
<script type="text/template">
## Where are we now?
</script>
</section>
<section data-markdown>
<script type="text/template">
### Added bonus
Sassquatch consolidated domain-specific knowledge
</script>
</section>
<section data-background="#666">
<h2>a closing thought...</h2>
</section>
<section data-background="#111">
<h1 class="sassy--color">Thanks!</h1>
<p>github.com/akdetrick/sassquatch-presentation</p>
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.min.js"></script>
<script>
// Full list of configuration options available here:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: false,
progress: true,
history: true,
center: true,
width: 1024,
margin: 0.05,
previewLinks: true,
theme: "moon", // available themes are in /css/theme
transition: "concave", // default/cube/page/concave/zoom/linear/fade/none
// Parallax scrolling
// parallaxBackgroundImage: 'https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg',
// parallaxBackgroundSize: '2100px 900px',
// Optional libraries used to extend on reveal.js
dependencies: [
{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
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