twentyten child theme not working

I am trying to create a twentyten child theme. I have created a new folder in my wp-content/themes folder called aphdesign and created a new css file within that:

[mod: please read the forum guidelines for posting code]

@import url(‘../twentyten/style.css’);
“
/*
Theme Name: aphdesign
Theme URI: https://www.aph-design.com/blog
Description: Twentyten child-theme for APH Design
Author: Amy Pearce Hamlet
Version: 0.0.1
Template: twentyten
Tags: two-columns, right-sidebar, custom-header, custom-colors, custom-background, custom-menu, theme-options, threaded-comments, sticky-post, translation-ready, microformats, rtl-language-support, editor-style
*/
“
When I go to dashboard, manage themes a new theme appears with this information below it:
APH Design Theme 1 by Amy Pearce Hamlet

This is my WordPress Theme template — WordPress v3.0.1
Activate | Preview | Delete

All of this theme’s files are located in /themes/BLANK-Theme.

and when I preview it, it has no styles applied to it, just plain text.