Reply To: Override WPGeo Styles

You can also create the style.css file in the child theme and set it like this:

/*
Theme Name: your_theme_name
Description: Your theme description.
Author: Your Name @ Your Company
Template: parent_theme
*/

@import url("../parent_theme/style.css");

/* =Theme customization starts here
-------------------------------------------------------------- */

This is how WordPress recommends to work with styles in child themes as you can see here.