v0.1.2498 Sep 2026·Rendering, Tabs & interface

Rendering fidelity: three more real-web fixes

More layout fixes for the reading web, each found the same honest way: render a real site next to the reference browser, spot where a box lands in the wrong place, and trace the cause to a single rule. Three long-standing web idioms now match a mainstream browser. The expandable sections sites build for FAQs, code samples and show more panels no longer leave an empty gap that shoved their heading sideways when the little arrow is turned off. Footers and banners built the classic centered way, the kind a link-sharing site and countless older sites use, now actually center instead of hugging the left edge. And modern pages that place a fixed sidebar next to a flexible main column, which is nearly every documentation site, no longer overflow off the side of the window when the main column holds one very long unbreakable line such as a raw web address. Every fix is a general one, checked by the automatic pixel comparison against the reference browser, so it lifts every site that uses the pattern, not just the one it was found on. Pages that did not hit these cases are unchanged.

Parity with the reference browser

74overall, as of v0.1.343

Web APIs / DOM surface42

Security architecture66

GPU / graphics acceleration68

DevTools / extensions72

Networking85

Media85

Accessibility85

Real-world site compatibility99

HTML parsing100

CSS parsing + selectors100

Layout: block / flex / grid / tables / writing-modes100

Paint + visual100

JavaScript language100

JavaScript performance (JIT)100

HTML parsing100

What changed 3 changes

Rendering	Expandable sections sit where they should. The click-to-open Details and Summary blocks sites use for FAQs, code and show more panels, when a site hides the default triangle to draw its own, no longer reserve an empty sliver of space that pushed the heading and everything beside it on that line to the right. The label now lines up exactly as it does in the reference browser.
Rendering	Classic centered layouts center again. Footers and banners built the old-web way, with a centering tag wrapped around a table (a link-sharing site' whole footer, its row of Guidelines and FAQ links and its search box, and a great many older sites), now center their contents instead of clinging to the left edge. A centering instruction set on the element itself correctly wins over what it would otherwise inherit from the table around it.
Tabs & interface	Grid pages stay inside the window. The common modern layout of a fixed sidebar beside a flexible main column, which almost every documentation site uses, no longer spills off the right of the screen. A single long unbreakable line in the main column, a raw web address or a run of code, used to force that whole column wider than the page; the column can now shrink to the space that is actually free, exactly as in the reference browser, so the article stays on screen and reads cleanly.