How to get moving underline to header menu

[iHavPet]

I need the underline menu load like in the video, thanks

[iHavPet]

My store - https://6a0203-f3.myshopify.com/

I want to get same header animation, if you hover on the header menu there will be line under the menu button. 
I will add the website where it is like i want: https://yimoli-boutique.myshopify.com/