I change some things in the css, and now i cannot delete this row

Hi, i have this red row in the middel of the page, but i deleted in the upfront, and now i cannot change the row.
If I put another row with the same settings, the row appears, and also the button, another thing that i deleted.

I have the W3 cache installed, but i purged the cache with every change that i did in the page.
How can i deleted this row?