Changing the text color of drop down menu

Hi everyone,

I am not familiar with CSS and I have been lucky enough to find solutions on the forum to change my menu bar color as well as the hover color. On my website https://betasite.medicinefreehealing.com I am trying to change the grey text that appears on the drop down menu items under “patient resources” and “articles” and make it always appear white. As of right now, it changes to white when you hover over any one individually. Thanks for the help!