Cant change the color of main menu fonts???

I have deactivated active caching, ensured file compression is off, and activated deleted the old CSS/JS files, however adjusting any of the Main Menu Links options still won’t update any changes. I have tried on numerous browsers, including some that have never visited that page before but all menu items are still showing as white. Is there somewhere else I can look that would be causing this?

The following pieces od code are currently active in the quick CSS section. Would any of these be forcing the colour change?

.phone-info{
font-size: 13px}

#top .cart_dropdown { display: none; }

.avia_textblock.awesome-textblock {
background: rgba(255,255,255,.8);
padding: 10px;
width: auto;
}

.av-menu-button-colored {
background: F28163;
}

.main_menu ul:first-child > li > a { font-size: 16px; }

.single-portfolio .attachment-entry_with_sidebar.wp-post-image {
display: none;
}

Yes…. I want the main menu links to be something other than white. Temporarily making them a #000000 colour would be fine.

Eventually, I’m wanting all my pages to look more like this: https://presentationgeeks.com/prezi-design/ with white space at the top. However, because the menus are currently white, you can’t see them. I’d like to be able to easily change the colour using the advanced styling editor so I can quickly make changes.

Temp login credentials in private content

Apologies for that. Account upgraded to admin.