Hi john. Yes, you can copy the style sheets to the same location as you index.html page and then all other pages in your site should contain the following code. This will allow those pages to pick up the commands issued in the style style sheet.
1) When publishing in BV you style settings will be overwritten. it will work fine if using the FTP manager in your BV Control Panel to upload your pages instead of using the publish command.
2) The code below must be entered into the HEAD of each page. the code can be added numerous times and point to as many different style sheets as you deem necessary,
3) Look at the section in green below, when you copy the code ensure that it points to the correct style sheet name
<LINK REL=STYLESHEET TYPE="text/css" HREF="stylesheetname.css">