janslu opened a new issue #1792: CSS optimization breaks IE11, how to disable? URL: https://github.com/apache/incubator-pagespeed-mod/issues/1792 I have a problem with a large css file generated by one of the frameworks. Current ModPagespeed built on nginx 1.14 rewrites one of the rules from: ``` .cell.auto { -ms-flex: 1 1 0px; -webkit-box-flex: 1; flex: 1 1 0px; } ``` to ``` .cell.auto { -ms-flex: 1 1 0; -webkit-box-flex: 1; flex: 1 1 0; } ``` This change is fine in most browsers, but breaks Internet Explorer 11. Unfortunately this rule is used for a main site grid and the whole layout breaks. I have tried to find a place to disable this change, but I couldn't. Here are my enabled filters: ``` ah Add Head cc Combine Css jc Combine Javascript gp Convert Gif to Png jp Convert Jpeg to Progressive jw Convert Jpeg To Webp mc Convert Meta Tags pj Convert Png to Jpeg ws When converting images to WebP, prefer lossless conversions ec Cache Extend Css ei Cache Extend Images es Cache Extend Scripts fc Fallback Rewrite Css if Flatten CSS Imports hpsr Hint Preload of Subresources hw Flushes html ci Inline Css gf Inline Google Font CSS ii Inline Images il Inline @import to Link ji Inline Javascript idp Insert DNS Prefetch js Jpeg Subsampling cj Move Css Above Scripts rj Recompress Jpeg rp Recompress Png rw Recompress Webp ri Resize Images jm Rewrite External Javascript jj Rewrite Inline Javascript cu Rewrite Style Attributes With Url cp Strip Image Color Profiles md Strip Image Meta Data ``` Any idea how I can protect this part of css from "optimization"?
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