Button Text in Navigation Overlay Menu Doesn't Show on Mobile

Site URL: https://disc-mustard-35hy.squarespace.com/

Hi, I have a button on my header navigation called "Daftarkan Brand Anda". It shows fine on desktop, but the text doesn't show on mobile navigation (inside the burger menu).

I tried adjusting the space size and try to look for any error, but couldn't find anything that works. I'm a designer and have very little knowledge of css or code. Would appreciate the help very much! 

Add to Home > Design > Custom CSS

/* Mobile header button */
.header-menu-cta a {
    color: white !important;
}

22 hours ago, tuanphan said:

/* Mobile header button */ .header-menu-cta a { color: white !important; }

It worked! Thank you so much for your help @tuanphan!