update the .css

[eunjinyun]

hello.
i want to change the font-family and font-size.

this is from /wp-admin/ apperance>themes change the font style that i setted.
———————————————-
body {
font-weight: 500!important;
font-family: ‘Open Sans’;
}
———————————————-

BUT, i want to use another font-family so, i updated the theme.min.css as a “font-family:Gulim, Dotum, Helvetica”.
but it doesn’t work. it still working from the apperance>themes> options.
what do i have to do ??

thank for your help.