fix menu bar when page scrolling

Hi,

1) Here is how you can have Sticky menu

– Install this plugin

Refer this image for setup info:

https://themonic.com/wp-content/uploads/2020/05/stickymenu-iconic-one.png

Under class ID write, .themonic-nav and select background color as #f3f3f3 as per screenshot

2) To bold font of menu bar, paste the following in Customizer -> Additional CSS

.themonic-nav li a {
    font-weight: bold;
}