Search icon color issue

The search icon in my menu is not showing up on the desktop is not displaying, however it shows on the mobile view. I looked through the color settings to see if it’s somehow set as the menu bar color, but it’s not. I added the following css to help resolve the issue but it’s not changing:

#top #menu-item-search a {
color: #515f77; /* Change the icon color */
}
#top #menu-item-search a:hover {
color: #515f77; /* Change color on hover */
}

I’ve flushed the cache, rebooted, and looked on alternate browers but I still don’t see the icon (should be in blue) in the menu. What am I missing?

Thank you!
Erin