Changing Colour of Font in Mobile Version

Site URL: https://disc-strawberry-4nlb.squarespace.com

Hi all, 

Having trouble changing the font colour in only the mobile view of my site. 

The black font shows up in desktop view, but is illegible in mobile (screenshots below). 

Any advice would be appreciated! 
Link: https://disc-strawberry-4nlb.squarespace.com
Password: gallery

Hi. Add to Design > Custom CSS

/* Mobile-Home-Font color */
@media screen and (max-width:767px) {
div#block-yui_3_17_2_1_1621523430137_1860 a {
    color: white;
}
}

You're a wiz! Thank you!