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
ブラウザのデフォルトスタイルを見てみよう
Search
Kite
January 29, 2017
Programming
3
1.5k
ブラウザのデフォルトスタイルを見てみよう
ユーザエージェントスタイルシートを読むことで、コードの無駄を減らし、未来の新機能に備えよう!
Kite
January 29, 2017
Tweet
Share
More Decks by Kite
See All by Kite
個人からチームまで、情報・タスク管理の一元化はNotionにお任せ!
ixkaito
12
73k
WordPress でも大丈夫!実例で見るウェブパフォーマンス改善
ixkaito
7
5.2k
WordPress でも大丈夫!実例で見るウェブパフォーマンス改善
ixkaito
22
7.7k
タイポグラフィベーシック (+ デザインアイデア)
ixkaito
13
3.9k
WordPress の今とこれから
ixkaito
1
1.8k
世界で一人しかできない WordPress コアを写経する話 ― 修行の先に見たものとは?
ixkaito
5
15k
WordPress の今とこれから
ixkaito
4
2.6k
Let's Think about Right Answers of Design and UI/UX
ixkaito
0
400
What's New in Twenty Seventeen
ixkaito
3
7.5k
Other Decks in Programming
See All in Programming
MCPで実現できる、Webサービス利用体験について
syumai
7
2.3k
Flutterと Vibe Coding で個人開発!
hyshu
1
210
Google I/O Extended Incheon 2025 ~ What's new in Android development tools
pluu
1
220
「次に何を学べばいいか分からない」あなたへ──若手エンジニアのための学習地図
panda_program
3
710
What's new in Adaptive Android development
fornewid
0
130
DatadogのArchived LogsをSnowflakeで高速に検索する方法(Archive Searchでオワコンにならないことを祈って) / How to search Datadog Archived Logs quickly with Snowflake (hoping Datadog Archive Search doesn’t make this obsolete)
civitaspo
0
110
顧客の画像データをテラバイト単位で配信する 画像サーバを WebP にした際に起こった課題と その対応策 ~継続的な取り組みを添えて~
takutakahashi
4
1.4k
AIに安心して任せるためにTypeScriptで一意な型を作ろう
arfes0e2b3c
0
330
Workers を定期実行する方法は一つじゃない
rokuosan
0
140
新しいモバイルアプリ勉強会(仮)について
uetyo
1
240
抽象化という思考のツール - 理解と活用 - / Abstraction-as-a-Tool-for-Thinking
shin1x1
1
920
SQLアンチパターン第2版 データベースプログラミングで陥りがちな失敗とその対策 / Intro to SQL Antipatterns 2nd
twada
PRO
36
11k
Featured
See All Featured
The Cult of Friendly URLs
andyhume
79
6.5k
Facilitating Awesome Meetings
lara
54
6.5k
Visualization
eitanlees
146
16k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
Docker and Python
trallard
45
3.5k
Being A Developer After 40
akosma
90
590k
A designer walks into a library…
pauljervisheath
207
24k
For a Future-Friendly Web
brad_frost
179
9.9k
Designing for Performance
lara
610
69k
The Language of Interfaces
destraynor
158
25k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
Transcript
ϒϥβͷσϑΥϧτελΠϧΛݟͯΈΑ͏ USER AGENT STYLESHEETS
WordPress core contributor Kite KITERETZ inc. CEO & Founder kite.koga
ixkaito ixkaito Web & graphic designer Programmer Ruby on Rails contributor React contributor Wocker developer Bathe developer Frasco developer
มଶత$44τϦοΫ $44ͱ͍͑ ͠XFCۀքͷྲྀߦޠେ͕͋ͬͨΒɺ͖ͬͱʮมଶత$44ʯɺ ͘͠ʮมଶతʓʓʯ͕ड͍ͯ͠ΔͩΖ͏ ˘Т˘
0 1 2 3 4 5 6 ͖͔͚ͬ ϨϯμϦϯάΤϯδϯ MBZPVUFOHJOF
6"ελΠϧγʔτͲ͜Ͱ֬ೝͰ͖Δͷ͔ ֤ϒϥβͷελΠϧ͕࣮ڞ௨͍ͯ͠Δʁ ཧతͳϓϩύςΟͱ ΞτϥΠϯɾΞϧΰϦζϜ ·ͱΊ CONTENTS
͖͔͚ͬ 6OSFTFU$44Λ࡞Δʹ͋ͨͬͯɺ ֤ϒϥβͷσϑΥϧτελΠϧʹ͍ͭͯௐ·ͨ͠ɻ IUUQTHJUIVCDPNJYLBJUPVOSFTFUDTT 0
ϨϯμϦϯάΤϯδϯLAYOUT ENGINE ϒϥβͷσϑΥϧτελΠϧɺϢʔβΤʔδΣϯτ 6" ελΠϧγʔ τͱݺΕ͓ͯΓɺجຊతʹϨϯμϦϯάΤϯδϯʹґଘ͠·͢ɻ ֤ϒϥβͲͷϨϯμϦϯάΤϯδϯΛ࠾༻͍ͯ͠ΔͰ͠ΐ͏͔ʁ 1
Firefox Gecko Chromium/Chrome 28 Ҏ্, Opera 15 Blink Safari, Chrome
27 ҎԼ, Opera 14 Webkit Opera 7-12 Presto Internet Explorer Trident Edge EdgeHTML
2֤ϒϥβ ϨϯμϦϯάΤϯδϯ ͷ σϑΥϧτελΠϧγʔτ Ͳ͜Ͱ֬ೝͰ͖Δͷ͔ʁ
Gecko (Firefox) https://dxr.mozilla.org/mozilla-central/source/layout/style/res/html.css Blink (Chromium/Chrome 28+, Opera 15+) https://chromium.googlesource.com/chromium/blink/+/master/Source/core/css/html.css Webkit
(Safari, Chrome before 28, Opera 14) http://trac.webkit.org/browser/trunk/Source/WebCore/css/html.css Presto (Opera 7 to 12) http://www.iecss.com/opera-10.51.css Trident (Internet Explorer) http://www.iecss.com/ie-9.css Edge (EdgeHTML) http://www.iecss.com/edgehtml-13.10586.css 6OSFTFU$44ͷ3&"%.&ʹৄࡉ͕ه ࡌ͞Ε͍ͯ·͢ɻ͞Βʹɺ֤$44ϑΝΠ ϧ͕ϑΥϧμʹ·ͱΊΒΕ͍ͯ·͢ɻ
3 ֤ϒϥβͷελΠϧ͕࣮ ڞ௨͍ͯ͠Δʁ
h1 h1 { display: block; font-size: 2em; font-weight: bold; margin-block-start:
.67em; margin-block-end: .67em; } Gecko (Firefox) Blink (Chrome, Opera) Webkit (Safari) h1 { display: block; font-size: 2em; -webkit-margin-before: 0.67__qem; -webkit-margin-after: 0.67em; -webkit-margin-start: 0; -webkit-margin-end: 0; font-weight: bold } h1 { display: block; font-size: 2em; -webkit-margin-before: 0.67__qem; -webkit-margin-after: 0.67em; -webkit-margin-start: 0; -webkit-margin-end: 0; font-weight: bold; } Internet Explorer Edge Presto (Opera before 28) h1 { display: block; font-size: 2em; font-weight: bold; margin: 0.67em 0; page-break-after: avoid; } h1 { display: block; font-weight: 700; margin-bottom: 0.5em; margin-top: 0.5em; page-break-after: avoid; } h1 { display: block; font-size: 2em; font-weight: bold; margin: 0.67em 0; page-break-after: avoid; }
margin-block-start = -webkit-margin-before = margin-top margin-block-end = -webkit-margin-after = margin-bottom
margin-inline-start = -webkit-margin-start = margin-left margin-inline-end = -webkit-margin-end = margin-right ͜ΕΛ౿·͑ͯ͏Ұ֤ϒϥβͷIλάͷελΠϧΛݟͯΈ·͠ΐ͏ margin-block-start-webkit-margin-beforeͳͲ ཧϓϩύςΟ ޙड़ ͱݺΕɺࠨ͔Βӈͷԣॻ͖ʹ͓͍ͯɺ
h1 h1 { display: block; font-size: 2em; font-weight: bold; margin-block-start:
.67em; margin-block-end: .67em; } Gecko (Firefox) Blink (Chrome, Opera) Webkit (Safari) h1 { display: block; font-size: 2em; -webkit-margin-before: 0.67__qem; -webkit-margin-after: 0.67em; -webkit-margin-start: 0; -webkit-margin-end: 0; font-weight: bold } h1 { display: block; font-size: 2em; -webkit-margin-before: 0.67__qem; -webkit-margin-after: 0.67em; -webkit-margin-start: 0; -webkit-margin-end: 0; font-weight: bold; } Internet Explorer Edge Presto (Opera before 28) h1 { display: block; font-size: 2em; font-weight: bold; margin: 0.67em 0; page-break-after: avoid; } h1 { display: block; font-weight: 700; margin-bottom: 0.5em; margin-top: 0.5em; page-break-after: avoid; } h1 { display: block; font-size: 2em; font-weight: bold; margin: 0.67em 0; page-break-after: avoid; }
&EHFҎ֎΄΅ಉ͡
h2 h2 { display: block; font-size: 1.5em; font-weight: bold; margin-block-start:
.83em; margin-block-end: .83em; } Gecko (Firefox) Blink (Chrome, Opera) Webkit (Safari) h2 { display: block; font-size: 1.5em; -webkit-margin-before: 0.83__qem; -webkit-margin-after: 0.83em; -webkit-margin-start: 0; -webkit-margin-end: 0; font-weight: bold } h2 { display: block; font-size: 1.5em; -webkit-margin-before: 0.83__qem; -webkit-margin-after: 0.83em; -webkit-margin-start: 0; -webkit-margin-end: 0; font-weight: bold; } Internet Explorer Edge Presto (Opera before 28) h2 { display: block; font-size: 1.5em; font-weight: bold; margin: 0.83em 0; page-break-after: avoid; } h2 { display: block; font-weight: 700; margin-bottom: 0.5em; margin-top: 0.5em; page-break-after: avoid; } h2 { display: block; font-size: 1.5em; font-weight: bold; margin: 0.83em 0; }
Iಉ༷ &EHFҎ֎΄΅ಉ͡
࣮ଟ͘ͷλάʹ͍ͭͯɺ ֤ϒϥβͰڞ௨ͨ͠ελΠϧ͕ઃఆ͞Ε͍ͯ·͢ɻ
4 ཧతͳϓϩύςΟͱ
ԣॻ͖͔ɺॎॻ͖͔ɺࠨ͔Βӈ͔ɺӈ͔Βࠨ͔ͳͲͷ ॻࣈํʹରԠ͢Δ͜ͱΛҙຯ͠·͢ɻ͜Εʹରͯ͠ɺ ීஈզʑ͕Α͍ͬͯ͘ΔͷཧతͳϓϩύςΟ ͱͰ͋ΓɺϖʔδશମʹରԠͨ͠ͷͰ͢ɻ ཧతͱ
margin-block-start: 2em; -webkit-margin-before: 2em; margin-before: 2em; ԣॻ͖ ॎॻ͖ ྫ
ཧతͳϓϩύςΟͱɺ XSJUJOHNPEFϓϩύςΟͱͷΈ߹Θͤɺ ॎॻ͖͕ෆՄܽͰ͋Δిࢠॻ੶ͳͲͰͷ׆༻͕ظ͞Ε·͢ɻ
5 ΞτϥΠϯɾΞϧΰϦζϜ
8FCLJU(FDLPͷIʹ͢Δͱɺ BSUJDMF BTJEF OBW TFDUJPOͷIʹ ผͷελΠϧ͕ઃఆ͞Ε͍ͯΔ͜ͱʹؾ͖ͮ·͢ɻ :-webkit-any(article,aside,nav,section) h1 { font-size:
1.5em; -webkit-margin-before: 0.83__qem; -webkit-margin-after: 0.83em; } :-webkit-any(article,aside,nav,section) :-webkit-any(article,aside,nav,section) h1 { font-size: 1.17em; -webkit-margin-before: 1__qem; -webkit-margin-after: 1em; }
ηΫγϣχϯάɾίϯςϯπͭͷ߹Iͱಉ͡ελΠϧɺ ηΫγϣχϯάɾίϯςϯπͭͷ߹Iͱಉ͡ελΠϧɺ ࠷େͰηΫγϣχϯάɾίϯςϯπͭͰIͱಉ͡ελΠϧͱͳΔΑ͏ઃఆ͞Ε͓ͯΓɺ ηΫγϣχϯάɾίϯςϯπͷਂʹΑͬͯɺIͷݟ͕ͨมΘΓ·͢ɻ
·ͱΊ 6
SER AGENT STYLESHEETS 6"ελΠϧγʔτΛಡΉ͜ͱͰɺ ίʔυͷແବΛݮΒ͠ɺະདྷͷ৽ػೳʹඋ͑Α͏ʂ
HAPPY CSS LIFE! THANK YOU!