Remove line under ".. items" in cart

Good day to you.
I didn`t find any options that could line under the text in mini cart, so it seems that some css file must be edited.
Can someone help me manage what kind of css file and it`s code must be changed to obtain desired result?
Thx for help.)

I suppose that you're talking about the product name display right ?
In that case, you can simply add such CSS:
.hikashop_product_name_main{display:none;}

www.hikashop.com/en/support/documentation/84-css-styling.html