i have some questions on this stylesheet, {css/text} Options

[TYPiKALFEMME]

well im just wondering what are options for these:

text-decoration: none;
text-transform: none;

&

<!-- begin code provided by createblog.com --><br />table.footer TD {<br />/* this makes the footer at the bottom centered */ <br />/* leave it as it is, unless you know what to do*/<br /> text-align:center;<br /><!-- end code provided by createblog.com -->

what is a table.footer TD?