Obviously, I have a lot of sub-categories but the way they are displayed on the site is very large

You can add overflow-y:auto;height:auto;max-height:240px to parent container.

You can add overflow-y:auto;height:auto;max-height:240px to parent container.

How can I do that I did not understand

@moohmd
Add to your stylesheet:
.search-cat .cat-tab {overflow-y:auto;height:auto;max-height:240px}

@moohmd
Add to your stylesheet:

Code: [Select]

.search-cat .cat-tab {overflow-y:auto;height:auto;max-height:240px}

I could not modify it Can you send the file to me and it is modified?

Read about CSS basic prior to modifying something please.