My name is Caio…

I am using StartFit theme on wordpress. When I add custom css to apply to h1 or h2, for example, the custom styling is not applying. The styling is only applying when I use specific classes for the wordpress elements e.g:

I am facing problem with website which is Web X Founders speed, basically the problem is i am using wordpress and i have a font-page.php and also a blogging theme so in front-page.php i have 1 page landing , which is loading too slow as per google page speed.

Having the hardest time trying to nail down the right css to target the anchor of the parent of a drop menu after the menu is open. The link turns yellow and I need it to be another color.