Compatibility

seele relies on the following modern web standards:

* CSSNumericValue is worked around currently so it does not raise the minimum version of Firefox

All of the above result in the following minimum requirements:

• Chromium: >= 135
• Firefox: >= 136
• Safari: >= 16.4

It is 2026 now, so you don't really need to worry about this. However, in the future, the following web features might be used and require higher browser versions:

• Popover API — Baseline 2025, Safari 17, will improve menu, popup, and combobox
• @starting-style — Baseline 2025, Safari 17.5
• anchor() — Baseline 2026, Firefox 147, Safari 26, will remove the dependency floating-dom

* omitting a specific browser version means using that standard does not raise the minimum required version of seele