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
The CSS of Tomorrow (revised)
Search
Peter Gasston
October 22, 2012
Programming
116
30k
The CSS of Tomorrow (revised)
London Web Standards, October 2012
Peter Gasston
October 22, 2012
Tweet
Share
More Decks by Peter Gasston
See All by Peter Gasston
People Don’t Change
stopsatgreen
0
150
Your Reality Here
stopsatgreen
0
86
Growing Up, Getting Serious - #SotB6
stopsatgreen
1
340
Growing Up, Getting Serious
stopsatgreen
0
86
Surveying the Landscape — November 2016
stopsatgreen
1
150
Surveying the Landscape - Fronteers
stopsatgreen
2
470
The Web vs. The Browser
stopsatgreen
0
180
Surveying the Landscape Sept. 2016
stopsatgreen
1
360
Surveying the Landscape
stopsatgreen
4
810
Other Decks in Programming
See All in Programming
Bytecode Manipulation 으로 생산성 높이기
bigstark
1
340
ReadMoreTextView
fornewid
1
420
無関心の谷
kanayannet
0
170
Julia という言語について (FP in Julia « SIDE: F ») for 関数型まつり2025
antimon2
3
950
Java on Azure で LangGraph!
kohei3110
0
130
Development of an App for Intuitive AI Learning - Blockly Summit 2025
teba_eleven
0
110
機械学習って何? 5分で解説頑張ってみる
kuroneko2828
0
210
Go1.25からのGOMAXPROCS
kuro_kurorrr
1
680
Javaのルールをねじ曲げろ!禁断の操作とその代償から学ぶメタプログラミング入門 / A Guide to Metaprogramming: Lessons from Forbidden Techniques and Their Price
nrslib
3
2k
来たるべき 8.0 に備えて React 19 新機能と React Router 固有機能の取捨選択とすり合わせを考える
oukayuka
2
720
複数アプリケーションを育てていくための共通化戦略
irof
10
3.9k
WindowInsetsだってテストしたい
ryunen344
1
170
Featured
See All Featured
Intergalactic Javascript Robots from Outer Space
tanoku
271
27k
[RailsConf 2023] Rails as a piece of cake
palkan
55
5.6k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
137
34k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
52
2.8k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
45
7.3k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
32
5.9k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
130
19k
Code Review Best Practice
trishagee
68
18k
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
29
9.5k
How GitHub (no longer) Works
holman
314
140k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
8
660
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
15
1.5k
Transcript
Peter Gasston @stopsatgreen http://broken-links.com
The CSS of Tomorrow
Predicting the Future “Television won’t last. It’s a flash in
the pan.” - Mary Somerville
Predicting the Future “Home taping is killing music” - BPI
Predicting the Future “There’s no chance that the iPhone is
going to get any significant market share. No chance.” - Steve Ballmer, 2007
I Predict: Cynicism “That sounds cool but it's useless because
we'll have to wait for browsers to catch up.”
The CSS of Tomorrow
Root-relative units html { font-size: 10px; } p { font-size:
1.4em; }←14px p span { font-size: 0.8572em; }←12px 0.85714285714286
Root-relative units html { font-size: 10px; } p { font-size:
1.4rem; }←14px p span { font-size: 1.2rem; }←12px Much better. http://www.w3.org/TR/css3-values/
Root-relative units E { width: 65%; } F { width:
76.9231%; }←55% of root 76.923076923077%
Viewport-relative units 100vw 100vh
Root-relative units E { width: 65vw; } F { width:
55vw; }←55% of root Pukka. http://www.w3.org/TR/css3-values/
In-/Ex-trinsic Sizing E { width: fill-available; } E { min-height:
fit-content; } http://www.w3.org/TR/css3-sizing/
Selectors ol span, ul span, p span {} *:matches(ol,ul,p) span
{} *:not(ul) span {} http://www.w3.org/TR/2011/WD-selectors4-20110929/
Selectors :link, :visited :any-link :local-link http://www.w3.org/TR/2011/WD-selectors4-20110929/
Selectors <label for="foo" /> <input id="foo" /> label /for/ input
{} label:hover /for/ input {} http://www.w3.org/TR/2011/WD-selectors4-20110929/ an attribute of E the value of which is equal to the id of F E /foo/ F
Selectors E! > F !E > F !E! > F
E!!1! > F The Parent Selector! http://dev.w3.org/csswg/selectors4/
Positioning E { position: sticky; } http://updates.html5rocks.com/2012/08/Stick-your-landings-position-sticky-lands-in- WebKit
Media Queries
Media Queries @media (script: 0) {} @media (hover) {} @media
(pointer: fine|coarse) {} http://dev.w3.org/csswg/mediaqueries4/
Media Queries @media screen and (min-width: 400px) {} @media screen
and (min-width: 960px) {} @media screen and (resolution: 2dppx) {}
Media Queries @media screen { @media (min-width: 400px) {} @media
(min-width: 960px) {} @media (resolution: 2dppx) {} } http://my.opera.com/ODIN/blog/2012/08/28/colourful-opera-12-50-snapshot
Device Adaptation <meta name="viewport" content="width=device-width,initial- scale=1,maximum-scale=2">
Device Adaptation @viewport { initial-scale: 1; maximum-scale: 2; width: device-width;
} http://dev.w3.org/csswg/css-device-adapt/
Device Adaptation @viewport { initial-scale: 1; width: device-width; } @media
(min-width: 800px) { @viewport { maximum-scale: 1; } }
Conditionals @supports (columns: 3) {} =
Images
Images E { background-image: image('foo.svg','foo.png',#F00); } E { background-image: url(foo.png);
} http://dev.w3.org/csswg/css4-images/
Images E { background-image: image-set( 'foo.png' 1x, 'foo-hi.png' 2x, 'foo-mega.png'
600dpi ); }
Images E { background-image: image('foo.svg#xywh=0,0,200,60'); }
Images #c { background: element(#b); } ‘B’ Actually C A
B
Images E { background-image: conic-gradient(#F00,#0F0,#00F); }
Layout
Flexbox
.holder { display: flex; } .child { width: 30%; }
.child { flex: 1; } A B .a { flex: 2; } .b { flex: 1; } Flexbox http://www.w3.org/TR/css3-flexbox/
Flexbox C A B .outer { flex-direction: column; } .a,.b
{ order: 2; } .c { order: 1; } A B .outer { flex-direction: column; } .a { flex: 2; } .b { flex: 1; }
Grid Layout
Grid Layout E { display: grid; grid-definition-columns: 1fr 1fr 2fr;
} E { grid-definition-columns: 1fr 1fr 2fr; grid-definition-rows: 10em auto 40px; } http://dev.w3.org/csswg/css3-grid-layout/
Grid Layout F { grid-column-position: 2; grid-row-position: 2; } A
B .a { grid-column: 2 2; } .b { grid-row-span: 3; }
Grid Templates E { grid-template: 'head head head' 'nav main
main' 'foot foot foot'; } .a { grid-area: 'head'; } .b { grid-area: 'main'; } A B
Overflow E { overflow-x: pages; } Overflow http://dev.w3.org/csswg/css3-overflow/
Overflow E { overflow: fragments; } E::nth-fragment(odd) {} http://dev.w3.org/csswg/css3-break/ Overflow
Regions A .a { flow-into: foo; } B C D
.b, .c, .d { flow-from: foo; } B .b { flow-from: foo; } http://dev.w3.org/csswg/css3-regions/
None
Exclusions & Shapes E { position: absolute; } wrap-flow: both;
http://dev.w3.org/csswg/css3-exclusions/
Exclusions & Shapes E { shape-outside: circle(50%,50%, 400px); } E
{ shape-inside: circle(50%,50%, 400px); }
Filters E { filter: grayscale(1); } https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
Filters E { filter: custom(url(foo.fs)); }
Masking E { mask-image: url(foo.png); } http://dvcs.w3.org/hg/FXTF/raw-file/tip/masking/index.html + =
Masking E { clip-path: circle(50%,50%,200px); }
Pre-processors
Cascading Variables :root { var-brand-color: #F00; } h1 { border-color:
var(brand-color); color: var(brand-color); } http://dev.w3.org/csswg/css-variables/
Cascading Variables Y!$? $title = 'h1 span'; $brandcolor = '#f00';
.foo $title { border-color: $brandcolor; color: $brandcolor; }
Hierarchies .foo { border-color: red; } .foo h1 { color:
yellow; } .foo h1 em { font-style: normal; } .foo ul { margin: 0; }
Hierarchies .foo { border-color: red; & h1 { color: yellow;
& em { font-style: normal; } } & ul { margin: 0; } } http://dev.w3.org/csswg/css3-hierarchies/
Mixins TBC
“When can we use them?” 1. Browser update cycles are
getting faster 2. The market share of IE is shrinking
“When can we use them?” 1. Your environment 2. How
much do you want it?
Fin.
None
Image Credits http://www.buzzfeed.com/peggy/22-reasons-why-design-was- more-awesome-in-the-80s http://80s-touch.tumblr.com/ http://theyank.tumblr.com/