Remove trending keys option from store search bar

Store Design
1

Hello, I have a problem with the search bar in the store; when we click on it, trending terms that are unrelated to the store are displayed.
I want to take it out.
Need assistance. Theme: Ella version 5.1.0

2
  1. Go to Online Store->Theme->Edit code
  2. Asset->/theme.min.css->paste below code at the bottom of the file.
note: you may have different CSS file for you theme. search the main CSS file of your theme and paste at the bottom
.quickSearchResultsWrap .header-search__trending {
    display: none;
}
.header-block.header-search__trending {
    display: none !Important;
}
3

Thank you for your reply.

I tried pasting CSS code, as you suggested, but it didn’t work.
Unfortunately, I do not have any background in programming languages.
The theme I’m using right now is Ella version 5.1.0.

I would appreciate it if you could make things easier for me.