zpupster on "child style.css not showing anything"

this is my first child theme.

parent theme-oxygen

what i have done is started a New Folder in
wp-content-->themes-->
and named it oxygen-child

save a style.css file with this info

/*
Theme Name: oxygenChild Theme
Theme URI: http: //site.com/
Description: This is a custom child theme I have created.
Author: Craig
Author URI: http: //site.com
Template: oxygen
Version: 0.1
*/

@import url("../oxygen/style.css")

went to Apearence--> themes

and chose oxygenChild and activated it.

i viewed it and it looked just like oxygen
with styling

My Problem :

when i add anything to style.css in oxygen-child

such as

body {
margin: 0;
font: 0.75em/1.75em 'Helvetica Neue', Helvetica, Arial, sans-serif; /* 12 / 16 = 0.75; 21 / 12 = 1.75 */
color: #444;
background: #000;
padding: 0;
}

or anything for that matter

all styling disappears

thanks