CSS Background Color not working in FireFox

Hello

I have created a site to use in joomla. I have my css code that works fine in IE. When i test it in Firfox the background of the wrapper should be white and the footer should be on the bottom.

Any help would help

here is my css code

body{ 

	text-align: center;
	background-image:url(../images/bg.jpg);
	background-repeat:repeat-x;
}

tr, p, div {

	font-family:Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
	line-height: 1.3em;
	color:#000000;

}

ul {

	list-style:none;

}

li {

	padding-left: 25px;
	padding-top: 0;
	background-image: url(../images/arrow.png) ;
	background-repeat: no-repeat;
	background-position: 10px 5px;

}

ol{

	margin-left:40px;
	list-style-position:inherit;

}

#mainlevel-nav {
	float: right;
	font-size: 1.1em;
	color: #FFF;
	width: 600px;
	text-align: right;
	padding: 0 20px 0 0;

}



#mainlevel-nav ul { 
	font-size: 1.1em; 
	margin: 0;  
	padding: 0;
}

#mainlevel-nav li { 
	color: #fff;
	background: none;
	display: inline;
}


#mainlevel-nav li a { 
	font-weight: bold;
	color: #FFF; 
} 


#mainlevel-nav li a:hover { 
	color: #fff;
    text-decoration   : underline;

} 

.menu {

	padding-top:35px;

}

#active_menu {
	color: #523417;
	text-decoration: none;
	font-family:Verdana, Arial, Helvetica, sans-serif;
}

a:link, a:visited {
	color: #76c41d;
	text-decoration: none;

}

a:hover {
	color: #523417;
}

a.mainlevel:link, a.mainlevel:visited {
	display: block;
	color: #523417;
	margin: 0 0 1px 0;
    text-decoration: none;
	padding-left:10px;
	line-height:25px;
	padding-right:20px;
	padding-top:10px;

}

a.mainlevel:hover {
	color: #177D17;
	background: #ffffff;

}

a.mainmenu:link, a.mainmenu:visited {
	color: #ffffff; 
	font-family: Verdana, Helvetica, sans-serif;
	font-weight: bold;
	font-size: 10px;

}

a.mainmenu:hover {
	color: #3bba4b; 

}

a.sublevel:link, a.sublevel:visited {
	font-size: 11px;
	color: #523417;
	background-color:#ffffff;


}

a.sublevel:hover {
	color: #177D17;
	text-decoration: none;

}


.contentheading {
	font: bold 1.2em Verdana, Arial, Helvetica, sans-serif;
	color: #177d17;
	text-align: left;
	margin: 0 0 10px 0;
	padding-top:10px;

}

.componentheading {
	font: bold 1.3em Verdana, Arial, Helvetica, sans-serif;
	color: #000000;
	text-align: left;
	margin: 0 0 10px 0;
	padding-top:10px;
}

#header {

	background: #ffffff url(../images/site_header.jpg);
	background-repeat:no-repeat;
	height: 167px;
	width:782px;
	padding:0;

}

#wrap {

	width: 782px; 
	margin:0 auto; /*center hack*/
	text-align: left;
	background: #FFFFFF;
	border: 1px solid #000000;

}

#main-body {
	float:left;
	width:100%;

}


table.moduletable_contactus {
	text-align:center;
	color: #177D17;

}


table.moduletable_contactus th

{
	font: bold 1.1em Verdana, Arial, Helvetica, sans-serif;
	color: #177D17;
	width: 100%;
	font-weight:bold;
	text-align: center;
}



table.moduletable_contactus td {
    background-color: #ffffff;
	text-align:left;
	padding: 10px ;
	color: #177D17;

}

table.moduletable_institute {
	text-align:center;
	color: #177D17;

}

table.moduletable_institute th

{

	font: bold 1.1em Verdana, Arial, Helvetica, sans-serif;
	color: #177D17;
	font-weight:bold;
	text-align: center;
}


table.moduletable_institute td {
    background-color: #ffffff;
	text-align:left;
	padding: 10px ;
	color: #177D17;
}

table.moduletable th {
	font: bold 1.1em  Verdana, Arial, Helvetica, sans-serif;
	color: #666;
	width: 100%;
	font-weight:bold;
	padding: 3px 10px;
	text-align: left;
}

table.moduletable li {
	color: #FFF;
}

table.moduletable ul {
	padding: 0px;

}

table.moduletable td {
	font-size: 11px;
	font-weight: normal;
}

table.moduletable {
	padding: 0 0px 5px 0px;
	width: 200px;
	margin-bottom:5px;

}

table.content {
	padding: 0;
	vertical-align: top;
}

td.leftcolumn {
	width: 180;
	vertical-align: top;
}

td.maincontent {
	width: 602;
	vertical-align: top;
}

table.rightbox {
	width: 230;
	border: 1;
	align: right;
	padding: 10px;
}

td.rightcolumn {
	width: 230;
	vertical-align: top;
}

td.bottom {
	width: 612;
	vertical-align: top;
}

.footer {

}

img {
	border:none;
}

Code (markup):

please help..thanks

 

Write link to the site, please.

 

http://www.homeenergydetective.com/index.php