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Decoupling the Front-end with Modular CSS
The document discusses the challenges of managing CSS within codebases, highlighting issues like specificity hell and the coupling of HTML and CSS. It advocates for modular CSS practices such as Object-Oriented CSS (OOCSS), BEM, and SMACSS to create scalable, maintainable, and predictable styling. The document emphasizes best practices for naming conventions, separation of structure from skin, and the importance of documentation in CSS architecture.
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Similar to Decoupling the Front-end with Modular CSS
Decoupling the Front-end with Modular CSS
- 1. Decoupling the Front-endwith Modular CSS Julie Cameron @jewlofthelotus #OSCON 2015 bit.ly/decoupling-css
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- 9. #cascade { div.is { span.delicate{ position: absolute !important; } } } @jewlofthelotus | #OSCON
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- 11. “It’s almost achallenge to find a development team that’s working on a codebase that’s more than a couple of years old where the CSS isn’t the most frightening and hated part of that system.” Andy Hume - CSS for Grownups @jewlofthelotus | #OSCON
- 12. TOP DOWN CSS = REPETITION& BLOAT @jewlofthelotus | #OSCON
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- 16. NONE OF THISIS SCALABLE OR MAINTAINABLE. A hot mess is what it is… @jewlofthelotus | #OSCON
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- 18. WE’VE BEEN COUPLING OUR HTML& CSS @jewlofthelotus | #OSCON
- 19. WE’VE BEEN COUPLING OUR HTML& CSS And sometimes our CSS & JavaScript. @jewlofthelotus | #OSCON
- 20. WE’VE BEEN COUPLING OUR HTML& CSS And sometimes our CSS & JavaScript. …and Feature Specs, too. @jewlofthelotus | #OSCON
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- 22. STOP USING CSS SELECTORS FORNON-CSS Data Attributes. FTW. @jewlofthelotus | #OSCON
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- 32. Modular Solutions • OOCSS •BEM • SMACSS • Atomic Design • CSS for Grownups • CCSS • DRY CSS • and many more… @jewlofthelotus | #OSCON
- 33. Object Oriented CascadingStylesheets OOCSS https://github.com/stubbornella/oocss/wiki @jewlofthelotus | #OSCON
- 34. A scalable, maintainable, semantic,and predictable approach to writing CSS. @jewlofthelotus | #OSCON
- 35. OOCSS was createdby Nicole Sullivan while working for Facebook. She created a reusable CSS module called the “media object” to save hundreds of lines of code. stubbornella.org @jewlofthelotus | #OSCON
- 36. The Media Object “acontent block containing a fixed-size media element (e.g. image or video) along with other variable-size content (e.g. text)” https://github.com/stubbornella/oocss/wiki AKA a Facebook status. @jewlofthelotus | #OSCON
- 37. A Media Object Mediato the left and some variable length content to the right. img.png @jewlofthelotus | #OSCON
- 38. The Foundation ofModular CSS OBJECTS @jewlofthelotus | #OSCON
- 39. Objects are the abstractionof repetition. @jewlofthelotus | #OSCON
- 40. Object Makeup 1. HTML- one or more nodes of the DOM https://github.com/stubbornella/oocss/wiki/FAQ @jewlofthelotus | #OSCON
- 41. Object Makeup 1. HTML- one or more nodes of the DOM https://github.com/stubbornella/oocss/wiki/FAQ 2. CSS that styles those nodes @jewlofthelotus | #OSCON
- 42. Object Makeup 1. HTML- one or more nodes of the DOM https://github.com/stubbornella/oocss/wiki/FAQ 2. CSS that styles those nodes 3. JavaScript functionality tied to those nodes @jewlofthelotus | #OSCON
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- 44. Modules with Variations .btn .btn—primary.btn-small CSS .btn:hover @jewlofthelotus | #OSCON
- 45. Modules with Variations .btn .btn.is—disabled.btn.is-active CSS JS .btn—primary .btn-small CSS .btn:hover @jewlofthelotus | #OSCON
- 46. Module Components Object akamodule / component / block .btn, .media @jewlofthelotus | #OSCON
- 47. Module Components Object akamodule / component / block .btn, .media Child Objects .media__img, .media__body Relationships @jewlofthelotus | #OSCON
- 48. Module Components Object akamodule / component / block .btn, .media Modifiers .media—-inline, .media__img—-right CSS Design Variations Child Objects .media__img, .media__body Relationships @jewlofthelotus | #OSCON
- 49. Module Components Object akamodule / component / block .btn, .media Modifiers .media—-inline, .media__img—-right CSS Design Variations States .media—-collapsed, .media.is-active CSS / JS Design Adjustments Child Objects .media__img, .media__body Relationships @jewlofthelotus | #OSCON
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- 51. SINGLE RESPONSIBILITY Do one thingwell and one thing only. @jewlofthelotus | #OSCON
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- 53. NAMING CONVENTIONS Just breathe. Everythingis going to be okay. @jewlofthelotus | #OSCON
- 54. PICK A SYSTEM BECONSISTENT @jewlofthelotus | #OSCON
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- 56. Naming Patterns How doyou identify children? States? Modifiers? .objectChild .object-child .object_child .object_ _child .myObject—childObj .object.is—active .objectModifier .object-modifier .object_modifier .object——modifier .myObj-modClass .object.active @jewlofthelotus | #OSCON
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- 59. .block .media .block__element .media__img @jewlofthelotus | #OSCON
- 60. .block .media .block__element .media__img .block——modifier .media——inline @jewlofthelotus | #OSCON
- 61. .block .media .block__element .media__img .block——modifier .media——inline .block__element——modifier .media_ _img——right @jewlofthelotus | #OSCON
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- 63. Presentational Naming Describes howthe object looks. .grid_ _col——9 .btn——small .border——all .color——red .float——left .border——thick @jewlofthelotus | #OSCON
- 64. Semantic Naming Describes whatthe object is. .bookmark .article .callToAction .error .article_ _title .article——flagged @jewlofthelotus | #OSCON
- 65. Fewer Semantic Classes DRYHTML VS DRY CSSMany Presentational Classes @jewlofthelotus | #OSCON
- 66. NO ONE KNOWS WHATTHEY’RE DOING. @jewlofthelotus | #OSCON
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- 70. Structure Vs. Skin Definerepeating “invisible” patterns as reusable structures. What makes a button look like a button? @jewlofthelotus | #OSCON
- 71. Structure Vs. Skin Definerepeating “invisible” patterns as reusable structures. What makes a button look like a button? Define repeating visual patterns as reusable skins. What makes these buttons look different? @jewlofthelotus | #OSCON
- 72. Structure Repeating “invisible” patterns. Whatmakes a button look like a button? @jewlofthelotus | #OSCON
- 73. Structure Repeating “invisible” patterns. Whatmakes a button look like a button? @jewlofthelotus | #OSCON
- 74. Skin Repeating visible patterns. Whatmakes these buttons look different? @jewlofthelotus | #OSCON
- 75. Skin Repeating visible patterns. Whatmakes these buttons look different? @jewlofthelotus | #OSCON
- 76. Structure + Skin @jewlofthelotus| #OSCON
- 77. Structure + Skin .btn.btn—primary .btn—small .btn—block .btn—inverse @jewlofthelotus | #OSCON
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- 79. Container Vs. Content Objectsshould look the same no matter where you put them. @jewlofthelotus | #OSCON
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- 84. Separation Of Container &Content What is the container? @jewlofthelotus | #OSCON
- 85. Separation Of Container &Content What is the container? @jewlofthelotus | #OSCON
- 86. Separation Of Container &Content What is the content? @jewlofthelotus | #OSCON
- 87. Separation Of Container &Content Abstract reusable styles into a new object. @jewlofthelotus | #OSCON
- 88. With OOCSS, we’reencouraged to give more forethought to what is common among different elements, then separate those common features into modules, or objects, that can be reused anywhere. Louis Lazaris — Smashing Magazine @jewlofthelotus | #OSCON
- 89. OOCSS Structure vs. Skin Containervs. Content @jewlofthelotus | #OSCON
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- 91. HTML <3 CSS @jewlofthelotus| #OSCON
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- 93. The Semantics Debate •Do classes actually have “semantic” value? @jewlofthelotus | #OSCON
- 94. The Semantics Debate •Do classes actually have “semantic” value? • To whom are classes semantic to? @jewlofthelotus | #OSCON
- 95. The Semantics Debate •Do classes actually have “semantic” value? • To whom are classes semantic to? • Should we stick with one way or the other? @jewlofthelotus | #OSCON
- 96. Presentational Arguments • Classes haveNO meaning to the browser. @jewlofthelotus | #OSCON
- 97. Presentational Arguments • Classes haveNO meaning to the browser. • Classes ARE semantic to developers. @jewlofthelotus | #OSCON
- 98. Presentational Arguments • Classes haveNO meaning to the browser. • Classes ARE semantic to developers. • Content describes itself, classes don’t need to. @jewlofthelotus | #OSCON
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- 100. SMACSSScalable & ModularArchitecture with CSS http://smacss.com Jonathan Snook @jewlofthelotus | #OSCON
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- 102. • Base • Layout •Module • State • Theme SMACSS Categories @jewlofthelotus | #OSCON
- 103. CSS Resets + Default Styles Whatthings should generally look like. SMACSS Base Objects @jewlofthelotus | #OSCON
- 104. Containers + Grids Hold the modulestogether. SMACSS Layout Objects #IDs for single use “major” components .classes for reusable “minor” components @jewlofthelotus | #OSCON
- 105. Reusable Parts + Subclasses (Modifiers) Thegood stuff. SMACSS Modules @jewlofthelotus | #OSCON
- 106. Tacked on tolayout & module objects Indicate a JavaScript dependency. SMACSS State Objects !important is allowed and even recommended! @jewlofthelotus | #OSCON
- 107. Tacked on tolayout & module objects Indicate a JavaScript dependency. SMACSS State Objects !important is allowed and even recommended! Module-specific State objects Include module name & reside with it. pseudo & @media query states included. @jewlofthelotus | #OSCON
- 108. Themes can apply toall other object types In the case that your site has multiple holistic themes. SMACSS Themes @jewlofthelotus | #OSCON
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- 111. Atomic Design atoms moleculesorganisms templates pages @jewlofthelotus | #OSCON
- 112. Atomic Design atoms moleculesorganisms templates pages +@jewlofthelotus | #OSCON
- 113. The basic building blocksof matter. Single element. Global styles. Atoms @jewlofthelotus | #OSCON
- 114. Groups of atoms bondedtogether. Simple combinations built for reuse. Molecules @jewlofthelotus | #OSCON
- 115. Groups of molecules joinedtogether. Complex, distinct sections of an interface. Organisms @jewlofthelotus | #OSCON
- 116. http://patternlab.io A collection oftools to help you create atomic design systems. Pattern Lab
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- 125. STOP USING CSS SELECTORS FORNON-CSS @jewlofthelotus | #OSCON
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- 127. Questions? Decoupling the Front-endwith Modular CSS Julie Cameron @jewlofthelotus #OSCON 2015 bit.ly/decoupling-css