这里是 Frontend Focus 的中文翻译项目，每周在 己思 平台首发。
翻译及校对：richshaw2015，Yully Che
It’s early days but the first useful glimpse of Bootstrap 5 is here, including a new logo. Bootstrap continues to be a very popular CSS framework, not least because it keeps taking useful steps forward. v5 drops jQuery, starts to use CSS custom properties (a.k.a. CSS variables), and has overhauled its form components and styling.
来源：The Bootstrap Team
Folks from Google have already discussed how changing the way a URL is displayed could work. Now, one such test is live in Chrome Dev/Canary 85. The move has attracted a fair bit of criticism, but you can opt out.
来源：Corbin Davenport
Anything you add to a browser is going to have performance repercussions in terms of memory consumption, any JavaScript to be run, effects on page rendering, etc. These results demonstrate the costs pretty well but there’s one nice exception: the effect of ad blockers on ‘noisy’ pages!
来源：DebugBear
Over the past few years we’ve seen plenty of chatter around ‘browser engine diversity’. Here, Brian offers his “slightly tilted view of this” based instead on ‘the health of the ecosystem’, explaining why this may be a more valuable way to discuss these topics.
来源：Brian Kardell
💥 We’re finally here. Adobe has shared end of life plans for Flash. It will be gone from their site by the end of the year.
👋 Basecamp launced a new email service this week (Hey), and interestingly the UI is 100% HTML.
⚠️ Chrome 84 will organize console warnings in a new DevTools Issues tab.
📚 Last week I mentioned how the Internet Archive was facing legal action due to its ebooks program. This program will now be shuttered.
Ever been stumped as to why setting a z-index to 99999 didn’t solve your positioning issue? This interactive guide to using both Z-Index and Stacking Contexts may prove handy.
来源：Thiru Manikandan
Yup. Matthias shares how using supports() or a media-query can help deal with this quirk.
来源：Matthias Ott
This Hacker News thread goes into the weeds on this, and well….it’s complicated.
ſatisfaction == satisfaction == ſatiſfaction == Satiſfaction == SatiSfaction === ſatiSfaction
来源：Ben E. C. Boyter
This is an exhaustive look at the history of the search engine, covering everything from the DMOZ index to Duck Duck Go.
来源：Carl Hendy
A quick introduction to the inner workings of web accessibility.
<label for="accept-terms">I accept terms</label><input type="checkbox" id="accept-terms" />
来源：Segun Ola
Daniela shares the steps taken to fix certain accessibility issues (contrast, screen reader experience, alt tags) on her website.
来源：Daniela Matos de Carvalho
There have been a growing number of posts criticizing Jamstack. Brian takes on some of the common misconceptions that often underly these critiques (via our Jamstack newsletter).
来源：Brian Rinaldi
The work-in-progress browser Flow has just reached a development milestone, passing all three Acid tests. Plenty of in-depth browser chat sprung up around this news over on HN.
来源：Piers Wombwell
This effect feels a little overdone nowadays, but this library is small, efficient, and it feels performant to me too.
来源：Al Mamun
This tool does a fairly basic check for things like broken links, broken images, spelling errors, and potential layout errors (e.g. something overflowing a container). Example test.
来源：pagewatch
As simple as that, really :-)
来源：Raphael Voellmy
The site allows you to mix, match, and customize a whole slew of different illustrations that you can download in PNG or SVG format (requires sign-up for large versions).
来源：Blush Design
A free to start ‘no-code’ platform for building responsive HTML email templates. Uses a drag-and-drop UI and includes lots of pre-built components.
来源：Designmodo
From the Indian Type Foundry — this is an ‘internationalist take’ on the geometric sans-serif typeface with support for both Latin and Devanagari writing systems. The glyphs sport a practical, monolinear look which works well in many settings.
译者注：如需了解，请查看原文。
译者注：如需了解，请查看原文。
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