CSS Border att. not show in IE

[AlexGubert]

I can't get the border attribute to work on IE - it works on Firefox.
my site: http://www.pcfixexpress.com/index.htm
in the tip of the day section. Here is the CSS code:

div#tipoftheday
{
font-family:
Verdana, Arial, Helvetica, sans-serif; color:#003399;
border:1px solid grey;
text-align:justify;
margin: 15px 20px 15px 20px;
padding:5px;
}

Any suggestions?