Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Your CSS is a Mess
Search
snookca
September 18, 2012
Programming
18k
128
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
Your CSS is a Mess
Looking at 3 simple ways to keep your CSS more organized (and more modular)
snookca
September 18, 2012
More Decks by snookca
See All by snookca
Responsive Web Applications
snookca
0
1.7k
Responsive Web Applications
snookca
4
1k
Responsive Web Applications
snookca
0
200
Responsive Web Applications with Container Queries
snookca
3
740
Responsive Web Applications
snookca
0
140
The Future is In Pieces
snookca
1
210
Becoming a Deep Generalist
snookca
1
540
Your CSS is a Mess from ShropGeek's Revolution Conf
snookca
4
230
Your CSS is a Mess from SmartWeb
snookca
0
270
Other Decks in Programming
See All in Programming
ここ半年くらいでAIに作らせたR用ツール
eitsupi
0
360
JAWS-UG横浜 #102 AWSサ終供養LT会 成仏できない AWS サービスたち 〜本日、三体供養します〜
maroon1st
0
310
使いながら育てる Claude Code — 開発フローの1コマンド化 × 繰り返し指摘の自動仕組み化
shiki_kakaku
0
1.7k
【やさしく解説 設計編・中級 #6】良いアーキテクチャとは ~ 一本の登り道の、行き先 ~
panda728
PRO
0
210
Prismを使った型安全な暗号化_関数型まつり2026
_fhhmm
0
170
ソフトウェア設計に溶けるインフラ ― AWS CDK のインフラ認識論
konokenj
3
750
Claude CodeとAgentCore Gatewayを繋ぐ際の認証認可 / Authentication and authorization when connecting Claude Code with AgentCore Gateway
har1101
0
170
React本体のコードリーディング
high_g_engineer
1
130
AI時代、エンジニアはどう育つのか -未経験エンジニアの成長を間近で見て考えたこと-
thasu0123
0
210
PHP初心者セッション2026 〜生成AIでは見えない裏側を知る:今だからLAMPを通して仕組みを学ぶ〜
kashioka
0
820
全PRの83%がAIレビューだけでマージできるようになった開発組織はその後どうなったか
athug
1
1.4k
アルゴリズムは何を圧縮しているのか ─ Haskell から育った「圧縮代数」というメンタルモデル
naoya
16
3.8k
Featured
See All Featured
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
31
3.3k
The Director’s Chair: Orchestrating AI for Truly Effective Learning
tmiket
1
250
Unsuck your backbone
ammeep
672
58k
Dominate Local Search Results - an insider guide to GBP, reviews, and Local SEO
greggifford
PRO
0
250
Imperfection Machines: The Place of Print at Facebook
scottboms
270
14k
Building the Perfect Custom Keyboard
takai
2
830
Principles of Awesome APIs and How to Build Them.
keavy
128
18k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
659
62k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
21
1.6k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.8k
Accessibility Awareness
sabderemane
1
170
Agile Actions for Facilitating Distributed Teams - ADO2019
mkilby
0
240
Transcript
None
Jonathan Snoovvk The V’s are silent
YOUR CSS IS A MESS
None
None
1 person.
None
4 designers.
5 developers.
1 team.
1 project.
None
30 designers.
5 prototypers.
200 engineers.
multiple teams.
multiple projects.
CSS is easy.
None
None
li { }
oat: left padding: 3px 50px; margin: 0;
.block { display:block !important; } .inline { display:inline !important; }
.hide { display:none !important; } .s-none { margin:0 !important; } .s { margin:10px !important; } .ss { margin:20px !important; } .sr { margin-right:10px !important; } .p-none { padding:0 !important; } .p { padding:10px !important; } .pp { padding:20px !important; } .pt { padding-top:10px !important; } .w-auto { width:auto !important; }
.layout_1_2 #blogList .pageitem .statusBar {} .layout_1_2 #blogList .pageitem .statusBar .status,
#blogList .pageitem .statusBar .status .status1 { } .layout_1_2 #blogList .pageitem .statusBar .status { } .layout_1_2 #blogList .pageitem .statusBar .status .status1 { } .layout_1_2 #blogList .pageitem .statusBar .status .status1 a { } .layout_1_2 #blogList .pageitem .statusBar .status .status1 .sep {}
#comments .comment .meta .authorname {} #comments .comment .meta .commentnumber a
{}
#nav-header ul li { float: left; } #nav-content ul li
{ float: left; }
3 Considerations
3 Categorization Naming Convention Decouple HTML/CSS
1 Categorization
Categorization • Base • Layout • Module • State •
Theme
Base
html { background-color: #FFF; font-family: Arial, Helvetica, sans-serif; font-size: 14px;
} body { margin: 0; padding: 0; } h1, h2, h3 { margin: 1em 0; }
Layout
None
Sidebar Content Header
None
None
None
Module
Customized List Button Tabs
None
None
None
None
None
None
None
Sub-modules
Large Search Dark Small
None
None
State
Active State Default State Disabled State Default State
Theme
None
None
None
2 Naming Convention
Naming Convention Naming convention clari es intent
Use Class over ID Don’t use a grenade to dig
a hole when a shovel will do.
.btn {} .btn-large {} .btn-small {} .btn-default {} .btn-search {}
.btn {} .is-btn-active {} .is-btn-disabled {}
.theme-header {} .theme-border {} .theme-background {}
.text-plus1 {} .text-minus1 {}
3 Decoupling CSS from HTML
.nav { margin: 0; padding: 0; list-style: none; } .nav
li { float: left; } .nav li a { display: block; padding: 5px 10px; background-color: blue; }
<ul class="nav"> <li><a href="/">Home</a></li> <li><a href="/products">Products</a></li> <li><a href="/contact">Contact Us</a></li> </ul>
<ul class="nav"> <li><a href="/">Home</a></li> <li><a href="/products">Products</a> <ul> <li><a href="/products/shoes">Shoes</a></li> <li><a
href="/products/jackets">Jackets</a></li> </ul> </li> <li><a href="/contact">Contact Us</a></li> </ul>
.nav ul { margin: 0; padding:0; list-style:none; } .nav li
li { float: none; } .nav li li a { padding: 2px; background-color: red; }
.nav { margin: 0; padding: 0; list-style: none; } .nav
> li { float: left; } .nav > li > a { display: block; padding: 5px 10px; background-color: blue; }
.menu { margin: 0; padding: 0; list-style: none } .menu
> li > a { display: block; padding: 2px; background-color: red; }
Please. Use child selectors
<div class="box"> <h2>Sites I Like</h2> <ul> <li><a href="http://smashingconf.com/">Smashing!</a></li> <li><a href="http://smacss.com/">SMACSS</a></li>
</ul> </div>
.box { border: 1px solid #333; } .box h2 {
margin: 0; padding: 5px 10px; border-bottom: 1px solid #333; background-color: #CCC; } .box ul { margin: 10px; }
<div class="box"> <h2>Sites I Like</h2> <ul> <li><a href="http://smashingconf.com/">Smashing!</a></li> <li><a href="http://smacss.com/">SMACSS</a></li>
</ul> </div> <div class="box"> <h2>About Us</h2> <p>The Fancy Pants Company is all about fancy pants.</p> </div> <div class="box"> <h2>Sponsored By</h2> <div><img src="http://example.com/img.png" alt="..."></div> </div>
.box { border: 1px solid #333; } .box h2 {
margin: 0; padding: 5px 10px; border-bottom: 1px solid #333; background-color: #CCC; } .box ul, .box p, .box div { margin: 10px; }
.box { border: 1px solid #333; } .box h2 {
margin: 0; padding: 5px 10px; border-bottom: 1px solid #333; background-color: #CCC; } .box-body { margin: 10px; }
<div class="box"> <h2>Sites I Like</h2> <ul class="box-body"> <li><a href="http://smashingconf.com/">Smashing!</a></li> <li><a
href="http://smacss.com/">SMACSS</a></li> </ul> </div> <div class="box"> <h2>About Us</h2> <p class="box-body">The Fancy Pants Company is all about fancy pants.</p> </div> <div class="box"> <h2>Sponsored By</h2> <div class="box-body"><img src="..." alt="..."></div> </div>
when the HTML can’t or won’t be predictable Apply a
class
What does it mean?
Shift your thinking
Don’t code CSS for the page. Code it for the
system.
Have your CSS... Do one thing and one thing only
State-based Design
State-based Design • A layout or module style • Sub-modules
• JavaScript-driven states • Pseudo-class states • Media query states
CSS Panic http://snk.ms/15
.enemys { z-index:3; position:absolute; top:0px; left:0; width:49px; height:93px; display:block; -webkit-appearance:
button; -moz-appearance: button; background-position:0px 0px; background-repeat:no-repeat; -webkit-animation-iteration-count:infinite cursor:pointer; opacity:0.9; border:none;
.enemys { z-index:3; position:absolute; top:0px; left:0; width:49px; height:93px; display:block; -webkit-appearance:
button; -moz-appearance: button; background-position:0px 0px; background-repeat:no-repeat; -webkit-animation-iteration-count:infinite cursor:pointer; opacity:0.9; border:none;
.enemys:checked{ overflow:hidden; -webkit-animation-name: none; -webkit-pointer-events: none; pointer-events: none; opacity:0; }
.enemys:checked{ overflow:hidden; -webkit-animation-name: none; -webkit-pointer-events: none; pointer-events: none; opacity:0; }
3 Categorization Naming Convention Decouple HTML/CSS
GET SMACKED http://smacss.com/