Line Item

I am trying to change the font (color, family) on my menu items. I have searched and found several codes such as this

#access li.page-item-37 a {
font-family: curlz mt; font-size: 23px; color: #aabadd;

However, I have NO clue how to find what the item number/line number is for each menu item. For example I want to change the About link to the navy color.

I am trying to do this because I have gotten no replies on my other menu questions. If anyone is a good Samaritan what I REALLY want to do is make one long image I made be behind my menu. I have been beating my brains out for weeks trying to find a solution to this and nothing. I also can’t make the menu stop from I guess scrolling down as you read the page. Thank you to anyone who replies in advance. This has been eating away my days for some time now and still can’t figure it out! :'(

My site is https://caffeinatedandcreative.com