CSS problems in Firefox

[hydroplant]

I am a student studying web development. I am building my first page, just seeing if thing are going to work how I want them to. I have some basic knowledge of html and css. The problem I'm having is that my css isn't working correctly in firefox, onle in IE. The bulleted list is supposed to have green buttons, and the font styles are not being recognized (with the exception of the mouse-over style for the links). Again, I'm new to this, and I appreciate any help.

Here is the code for the CSS:
<style type="text/css">
<!--
body { font-family: Verdana, Arial, Helvetica, sans-serif }

H5 { color: #00CC33 }

A:link {text-decoration: none}
a:hover { color: #00CC33; text-decoration: none; font-family: Comic Sans, Comic Sans MS, cursive; font-size: 18px }

ul {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
font-style: normal;
line-height: 2em;
font-weight: normal;
font-variant: normal;
text-transform: none;
color: #00CC33;
text-decoration: none;
text-indent: 5px;
}
-->
</style>