How to hide these counters numbers from categories?

Question

How can I hide these counter numbers from categories in my website?

Comments

You do do inspect element in browser, identify the CSS class and put display:none for that class in CSS style.

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can you explain more?
where can I change exactly

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To inspect an element of a web page in your browser right-click that element and select "inspect" in the context menu.
To change the CSS style of an element or class edit your theme's CSS (usually qa-theme.css), find that element or class and modify its attributes.

Answer 1

Use this code:
 

span.qa-nav-cat-note {

  display: none;

}

Comments

Sorry, I`m not Programmer
Can you explain me where can I add that code?