About 90% of users use a browser that supports the latest spec in full [1], and IE11 supports an older version of the spec and requires `-ms-` prefixing (which we do output), so hopefully most simple uses of grid in Webflow will work for IE11 users. That said I wouldn't say we officially support "out of the box" CSS grid support in IE11.
Right now we have only implemented a _subset_ of the spec; we'll be doing a more thorough audit of IE11 support as we add support for more sophisticated grid features, as those are more likely going to need some kind of built-in fallback.
In the meantime I would encourage folks that need custom fallback behavior to harness site-wide custom code; Webflow outputs pretty straightforward HTML and CSS so it should be easy to manually create fallback styles.
I'm certain that the browser is the _perfect_ environment for a web design tool actually.
The performance issues you're experiencing are no fault of the browser per se; our codebase has grown very quickly in the last few years and we're just beginning to implement RUM to maintain a baseline of performance across the product. Live & learn
That said, we feel your pain! We've formed a feature team to take care of infrastructure-wide performance issues and we're working to maintain a higher standard for performance going forward.
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[ 1.6 ms ] story [ 26.7 ms ] threadRight now we have only implemented a _subset_ of the spec; we'll be doing a more thorough audit of IE11 support as we add support for more sophisticated grid features, as those are more likely going to need some kind of built-in fallback.
In the meantime I would encourage folks that need custom fallback behavior to harness site-wide custom code; Webflow outputs pretty straightforward HTML and CSS so it should be easy to manually create fallback styles.
[1] https://caniuse.com/#feat=css-grid
I'm certain that the browser is the _perfect_ environment for a web design tool actually.
The performance issues you're experiencing are no fault of the browser per se; our codebase has grown very quickly in the last few years and we're just beginning to implement RUM to maintain a baseline of performance across the product. Live & learn
That said, we feel your pain! We've formed a feature team to take care of infrastructure-wide performance issues and we're working to maintain a higher standard for performance going forward.