CSS not working on 404

Is the Toggle Search Label option on to hide the label for the search block?
https://wordpress.org/support/article/search-block/

https://www.screencast.com/t/O2VCr4DdCXap

Let me know :)

Hi Ying,

Thank you, this made the trick. (Can't believe this was the solution. :))

Glad to hear that :)