Back and forward cache Stay organized with collections Save and categorize content based on your preferences. Back/forward cache (or bfcache) is a browser optimization that enables instant back and forward navigation. It significantly improves the browsing experience, especially for users with slower networks or devices. This page outlines how to optimize your pages for bfcache across all browsers
Building the main navigation for a website Stay organized with collections Save and categorize content based on your preferences. This tutorial describes how to build an accessible main navigation of a website. You learn about semantic HTML, accessibility, and how using ARIA attributes can sometimes do more harm than good. There are many different ways of building the main navigation of a website,
Browser compatibility A primary reason so many CSS features are set to cooperatively release is due to the efforts of Interop 2022. Before studying the Interop efforts, it's important to look at Compat 2021’s efforts. Compat 2021 The goals for 2021, driven by developer feedback via surveys, were to stabilize current features, improve the test suite and increase passing scores of browsers for five
The new responsive: Web design in a component-driven world Stay organized with collections Save and categorize content based on your preferences. Responsive Design Today Today, when using the term: "responsive design", you are most likely thinking about using media queries to change layout when resizing a design from mobile size, to tablet size, through to desktop size. But soon, this perception o
Debug layout shifts Stay organized with collections Save and categorize content based on your preferences. The first part of this article discusses tooling for debugging layout shifts, while the second part discusses the thought process to use when identifying the cause of a layout shift. Tooling Layout Instability API The Layout Instability API is the browser mechanism for measuring and reporting
Aspect ratio Aspect ratio is most commonly expressed as two integers and a colon in the dimensions of: width:height, or x:y. The most common aspect ratios for photography are 4:3 and 3:2, while video, and more recent consumer cameras, tend to have a 16:9 aspect ratio. Two images with the same aspect ratio. One is 634 x 951px while the other is 200 x 300px. Both have a 2:3 aspect ratio. With the ad
Centering in CSS Stay organized with collections Save and categorize content based on your preferences. Follow 5 centering techniques as they go through a series of tests to see which one is the most resilient to change. Centering in CSS is a notorious challenge, fraught with jokes and mockery. 2020 CSS is all grown up and now we can laugh at those jokes honestly, not through clenched teeth. If yo
目標とガイドライン RAIL においては、「目標」と「ガイドライン」という用語には次のような特定の意味があります。 目標。ユーザー エクスペリエンスに関連する主要なパフォーマンス指標。たとえば、タップして 100 ミリ秒未満でペイントします。人間の認識は比較的一定であるため、これらの目標が近いうちに変更される可能性は低くなります。 ガイドライン。目標の達成に役立つ推奨事項。現在のハードウェアやネットワーク接続の状態に固有のものであるため、今後変更される可能性があります。 レスポンス: 50 ミリ秒未満でイベントを処理 目標: ユーザー入力によって開始される遷移を 100 ミリ秒以内に完了し、ユーザーが操作が瞬時にあると感じられるようにします。 ガイドライン: レスポンスが 100 ミリ秒以内に表示されるようにするには、ユーザー入力イベントを 50 ミリ秒以内に処理します。これは、ボタンのク
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