I have created a Twenty Twelve blog and a bare bones child theme that appears in my Available Themes screen. But when I activate the child theme, the content of the blog is there but the appearance of the Twenty Twelve blog is radically altered even though I have made no changes to the child theme that should affect the Twenty Twelve theme. Thanks for any help to fix this. Here is the code for the child theme:
/*
Theme Name: Tearney Warner Child Theme
Description: Child theme for the Twenty Twelve theme
Author: Bruce Warner
Template: twentytwelve
*/
@import url('../twentytwelve/style.css');