Forum Moderators: not2easy
If you mean in the external CSS file (myfile.css), then no - you do not include the <style type="text/css"> tag. This is an html tag that tells the browser that what comes between <style> and </style> is css information.
The same applies to external JavaScript files (myscript.js), you do not included the <script type="text/javasrcipt">...</script> tags.