I'm working on building out a demo over newlifestyle. there seem to be some styles that can;t be overridden by custom.css. For example.

Changing the border declaration in #bottomrow to border-top: 0;

it works in the inspector. it works if i change the theme's template.css. but changing in custom.css doesn't change anything.

what am I missing?

--> dev link <--

i used as my guide the dictum "don't force it. get a bigger hammer." So in the template manager, I changed the tertiary color to #fff and at least all those borders went away. Brutal. But effective.

Every solution is a good solution if you are satisfied with the final result

Anyway, you can try to add this to your custom css to override template css definition

#bottomrow {
border-top: none !important;
}