traptc – what are you trying to do exactly? ??
If you’re trying to keep the menu section of the widgets panel permanently open, adding this bit of CSS code should do it:
.panel#menu-toggle-nav {
display: block;
}
If you’re trying to do something else, please let me know what so I can help.
Don’t edit the theme files directly, otherwise your changes will be overwritten when the theme is updated.
An easy way to add custom CSS is to install the Jetpack plugin and activate the Custom CSS module. You’ll then add your custom CSS in the new stylesheet editor that’ll appear in your dashboard, under Appearance > Edit CSS.
As alternatives, you could either install a standalone custom CSS plugin, or create a child theme.