Thank you, @Pealco.
By the way, here’s another page on my website which uses Cards. It looks fine in IE11 in LG and MD, but when I cross over to the SM and XS breakpoints, all the cards elongate with a huge amount of whitespace. So it’s the same problem as my contacts.html page:
And here is yet another page in my site that has problems ONLY in IE11:
It looks fine in LG and MD, but when I make the IE11 browser window more narrow than SM and XS, the Column that contains my two catalog images (the images with the little PDF icon in them) is missing. Again, this is only in IE11, and only in SM & XS. And there is no row inside a row problem here.
Here’s a Blocs screenshot showing the Column in question:
And if all that wasn’t bad enough, here is yet another page in my site that has huge gaps between my two white buttons AND the topmost table is missing too, ONLY in IE11 and ONLY when the browser window is narrowed to XS:
And to top if off, my search feature (click the magnifier in the upper right corner of any page, in any breakpoint) is totally dead in IE11 regardless of page or breakpoint. Clicking the magnifier does nothing in IE11. It’s only IE11. Firefox and Chrome for Mac and Windows, along with Safari, and iOS browsers work perfectly.
IE11 Errors, Warnings, etc. on my top page:
IE11 is such a bothersome browser! I loath the fact I need to support it! But 62% of our web visitors still use desktop computers (not mobile), and 30% of those desktop users use IE11 (90%) or IE9 (10%). If someone could please rescue me from this browser compatibility evil, I would be eternally grateful!