Template Modification Question!

[[xFv]]

Hello!
I am running xf153.
I am trying to edit a template through template modifications.
My issue is I noticed when I load templates, everything in the templates does not appear.

EXAMPLE: If I loaded a template that had this in it...

.message .messageInfo

{          
        @property "messageInfo";
        padding: 0;
        margin-left: 140px;
        border-bottom: 1px none black;
        @property "/messageInfo";
        zoom: 1;
}

it would show in template contents as this

.message .messageInfo

{          
        @messageInfo
        zoom: 1;
}

Anybody know why?
Any help is much appreciated!
ThanX!