How to delete blue color in mega menu

Store Design
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1

image
image1895Ă—313 27 KB

store - sukico.com.au
Pass - pass1
How do i delete this highlighted blue section in my mega menu thank you

2

Try this:

details#Details-HeaderMenu-2:hover {
  background: transparent !important;
}
3

where exactly do i place this im not very expirienced

4

Theme editor → Theme Settings

Scroll down to “Custom CSS”

5

It’s a work farmer , they’ve used custom css before in many previous posts for multiple different store urls, or their straight up account sharing thus the ongoing forgetfulness for years.