How to make navigation menu same text - brooklyn theme

Store Design
1

my store

Screen Shot 2022-04-15 at 11.51.04 AM.png
Screen Shot 2022-04-15 at 11.51.04 AM.png2004×665 123 KB

example store

Screen Shot 2022-04-15 at 11.51.53 AM.png
Screen Shot 2022-04-15 at 11.51.53 AM.png1709×666 134 KB

2

also how to add padding to navigation underline

3

I HAVE FIXED THE TEXT HOWEVER THERE IS TWO LINES SHOWING , THE HIGHLIGHTED NAVIGATION TEXT AND AN ADDITIONAL LINE . HOW DO I REMOVE THIS LINE

MY STORE
MY STORE2065×779 176 KB

EXAMPLE STORE

Screen Shot 2022-04-15 at 11.51.53 AM.png
Screen Shot 2022-04-15 at 11.51.53 AM.png1709×666 134 KB

4

ALSO I WOULD LIKE TO INCREASE PADDING BETWEEN text decoration underline and navigation link