Oh so you just want this part?
CODE
table.blogbody {
/* this edits the other the place where the blog is */
background-color:transparent;
family-font: FONT FAMILY;
BORDER: #COLOR CODE #px solid;
width:###px;} /* <-- The width for this should be around 5-15 pixels less then the width for your blog's div layer. */
?
Is what you're asking.
Simple then just put style tags around it.
CODE
<style type="text/css">table.blogbody {
/* this edits the other the place where the blog is */
background-color:transparent;
family-font: FONT FAMILY;
BORDER: #COLOR CODE #px solid;
width:###px;} /* <-- The width for this should be around 5-15 pixels less then the width for your blog's div layer. */</style>