# CSS Minify Warning Semrush **URL:** \ **Category:** CMS Development\ **Tags:** css\ **Created:** [February 5, 2020, 5:00am UTC](https://community.hubspot.com/t/css-minify-warning-semrush/18561 "2020-02-05T05:00:10Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![sgarga](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/sgarga/32/60590_2.png) [@sgarga](https://community.hubspot.com/u/sgarga)\ **Post date:** [February 5, 2020, 5:00am UTC](https://community.hubspot.com/t/css-minify-warning-semrush/18561/1 "2020-02-05T05:00:10Z")
I am suffering from problem with css minification. I manually minify css file but when i test it on semrush it again show warning. Please help to resolve this. The issue is only with style.css file because when i manually minify and add js files it remove warnings of js files from semrush. But when i do same with style.css file it doesn’t do anything. And it also show warnings for css files added in files/folders ![image_2020_02_04T12_51_34_335Z.png](https://d2qpr2jzcazej7.cloudfront.net/original/2X/f/f7939b68af9511c37bf97c13892ab28d20df2d52.png) ---
**Author:** ![Kevin-C](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/kevin-c/32/34570_2.png) [@Kevin-C](https://community.hubspot.com/u/Kevin-C)\ **Post date:** [February 5, 2020, 7:15pm UTC](https://community.hubspot.com/t/css-minify-warning-semrush/18561/2 "2020-02-05T19:15:19Z")
Hey @sgarga So this is an odd one because its not a HS error nor is it measured/reported on in HS. I would suggest you take a look at that “Why and how to fix it” link and see what SEMRush says about whats causing the issue. It could be undefined variables or lots of hard returns, but thats just an uninformed guess. Next I would take a look at those CSS files that SEMRush is refereing too. Analyze them to see if you are seeing any issues that would correspond to the errors. Then determine if those errors are caused by something that you can control on the HS side. [This article may help.](https://community.hubspot.com/t5/CMS-Development/Minify-CSS-to-help-with-website-performance/m-p/183577) Please keep us up to date on this issue’s resolution as I’m sure we can all benefit from the outcome.