[namuol]

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.

[1] https://caniuse.com/#feat=css-grid