Child Theme Problem

Hi…I’m trying to change the font styles of the menu items in the twentytwelve theme. I just created a child theme in a new twentytwelve-child directory. The style sheet inside is “style.css” and contains the following. When applied my bkg color is gone, the header image is gone, and the sub-menu items appear all at once instead of hidden.

Have I overlooked a simple link or procedure? Does anyone see any typos or errors below?

Thanks for any input….

Mike

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/*
Theme Name: Twenty Twelve Child
Theme URI: http://mysite.com/site/
Description: Twentytwelve Child Theme
Author: Mike
Author URI: http://www.mysite.com/site/
Template: twentytwelve
Version: 1.0.0
Tags: light, dark, two-columns, right-sidebar, responsive-layout, accessibility-ready
Text Domain: twenty-twelve-child
*/

@import url(“../twentytwelve/style.css”);

.main-navigation li a {
border-bottom: 0;
color: #6a6a6a;
line-height: 3.692307692;
text-transform: none;
white-space: nowrap;
}
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