Font CSS problem

hi!
I set my body font to be Merriweather, my widget font to be Open Sans(in the GP customizer), but I wanted whole widgets to use this font, so I added custom CSS:

.right-sidebar {
    font-family: "open sans";
}

How come my body entry-content font is inheriting font-family from .right-sidebar class, as can be seen here?:
https://unhype.com/health/best-yoga-blocks/

thanks