I am modifying a theme that I downloaded from here. It shows up correctly in IE. But in firefox there is a white background behind the banners. I changed the headerbanner in the styles.css to background-color: #000000; Here is the link to see what I am talking about.
http://www.dzflim.com The url has nothing to do with the actual site. I am just testing it. Now here is the css file if you think you can help!
body {color: #DA0000; background-color:#000000; background: black; margin: 5; padding: 0;}
body td, p, div {font-family: verdana, arial, helvetica; font-size: 11px;}
table {width: 100%; margin: 0; padding: 0;}
table td {padding: 0; border-width: 0; vertical-align: top; font-family: Verdana, Arial, Helvetica, sans-serif;}
a:link {color: #DA0000; text-decoration: none}
a:active {color: #000066; text-decoration: none}
a:visited {color: #DA0000; text-decoration: none}
h1 {}
h2 {}
h3 {}
h4 {}
h5 {}
ul { margin: 2px; padding: 2px; list-style: decimal inside; text-align: left;}
li { margin-left: 2px; list-style: square inside; color: #DA0000}
.item {}
.itemHead {padding: 3px; border: 1px solid #000000; background-color: #404040; background-image: url("block-title.gif"); color: #FFFFFF;}
.itemInfo {text-align: center; background-color: #404040; color: #000;}
.itemTitle a {font-size: 100%; font-weight: bold; font-variant: small-caps; background-color: transparent;color:#FFF;}
.itemPoster {font-size: 90%; color: #C90000; }
.itemPostDate {font-size: 90%; color: #C90000;}
.itemStats {font-size: 90%; color: #C90000;}
.itemBody {padding-left: 5px; color: #C90000;}
.itemText {margin-top: 5px; margin-bottom: 5px; line-height: 1.5em; color: #C90000;}
.itemText:first-letter {font-size: 100%; font-weight: bold; color: #C90000;}
.itemFoot {text-align: center; padding:3px; border:1px solid #808080; background-color: #404040; color: #C90000;}
.itemAdminLink {font-size: 90%; color: #C90000;}
.itemPermaLink {font-size: 90%; font-style:italic; color: #C90000;}
table#top {margin-bottom:8px;}
th {background-color: #CB0000; color: #FFFFFF; padding : 2px; vertical-align : middle; font-family: Verdana, Arial, Helvetica, sans-serif;}
td.slogan {padding-left:5px; padding-right:5px; height: 20px; background-image: url("block-title.gif"); color: #FFFFFF; border-top:1px solid black;border-bottom:1px solid black; vertical-align: middle; font-weight:bold;}
td#headerlogo {width:100%; background-color: #000000; vertical-align:middle; text-align:center;}
td#headerbanner {width: 100%; background-color: #000000; vertical-align: middle; text-align:center;}
td#headerbar {border-bottom: 1px solid #DA0000; background-image: url("hbar.gif");}
td#leftcolumn {width: 180px; font-size:12px;}
td#leftcolumn th {background-color: #DA0000; color: #FFFFFF; vertical-align: middle;}
td#leftcolumn .blockTitle {padding: 3px; background-color: #DD0000; background-image: url("block-title.gif"); color: #FFFFFF; font-weight:bold;border: 1px solid black;}
td#leftcolumn .blockContent {padding: 3px; line-height: 120%; line-height: 120%;background-color: #404040;margin-bottom:8px; color: #970000;}
td#centercolumn {font-size: 10px;}
td#centercolumn th {background-color: #DA0000; background-image: url("block-title.gif"); color: #FFFFFF; vertical-align: middle;}
td#centerCcolumn {padding: 0px 3px 1px 3px;}
td#centerCcolumn legend.blockTitle {padding: 3px; background-color: #DA0000; background-image: url("block-title.gif"); color: #FFFFFF; font-weight:bold;border: 1px solid black; margin-top: 0px; margin-right: 0px; margin-left: 0px;}
td#centerCcolumn div.blockContent {padding: 3px; margin-right: 0px; margin-left: 0px; margin-bottom: 2px; line-height: 120%;}
td#centerLcolumn {width: 50%; padding: 0px 3px 0px 0px; color: #000;}
td#centerLcolumn legend.blockTitle {padding: 3px; color: #DA0000; font-weight: bold; margin-top: 0px;}
td#centerLcolumn div.blockContent {padding: 3px; margin-left: 3px; margin-right: 2px; margin-bottom: 2px; line-height: 120%; color: #000;}
td#centerRcolumn {width: 50%; padding: 0px 3px 0px 0px;}
td#centerRcolumn legend.blockTitle {padding: 3px; color: #DA0000; font-weight: bold; margin-top: 0px;}
td#centerRcolumn div.blockContent {padding: 3px; margin-left: 2px; margin-right: 3px; margin-bottom: 2px; line-height: 120%; color: #000;}
div#content {text-align: left; padding: 8px;}
td#rightcolumn {width: 180px; font-size:12px;}
td#rightcolumn th {background-color: #DA0000; color: #FFFFFF; vertical-align: middle;}
td#rightcolumn .blockTitle {padding: 3px; background-color: #ddd; background-image: url("block-title.gif"); color: #FFFFFF; font-weight:bold;border: 1px solid black;}
td#rightcolumn .blockContent {padding: 3px; line-height: 120%; line-height: 120%;background-color: #404040;margin-bottom:8px; color: #B70303;}
tr#footerbar {text-align:center; }
tr#footerbar td {border-bottom:1px solid black; height:5px;background-image: url(bottombar.gif);}
td#mainmenu a {display: block; margin: 0; padding: 4px;}
td#mainmenu a:hover {background-color: #ffffff;}
td#mainmenu a.menuTop {padding-left: 3px;}
td#mainmenu a.menuMain {padding-left: 3px;}
td#mainmenu a.menuSub {padding-left: 9px; }
td#usermenu a {display: block; margin: 0; padding: 4px;}
td#usermenu a:hover {background-color: #ffffff;}
td#usermenu a.menuTop {}
td#usermenu a.highlight {background-color: #fcc;}
.outer {border: 1px solid #FF6666;}
.head {background-color: #FF6666; padding: 5px; font-weight: bold; color: #fff;}
.even {background-color: #404040; padding: 5px; color: #CA0303;}
.odd {background-color: #404040; padding: 5px; color: #CA0303;}
.foot {background-color: #404040; padding: 5px; font-weight: bold; color: #CA0303;}
tr.even td {background-color: #7C7C7C; padding: 5px; color: #CA0303;}
tr.odd td {background-color: #404040; padding: 5px; color: #CB0000;}
div.errorMsg { background-color: #FFCCCC; text-align: center; border-top: 1px solid #FF9898; border-left: 1px solid #FF9898; border-right: 1px solid #AAAAAA; border-bottom: 1px solid #AAAAAA; font-weight: bold; padding: 10px;}
div.confirmMsg { background-color: #DDFFDF; color: #FF6666; text-align: center; border-top: 1px solid #DDDDFF; border-left: 1px solid #DDDDFF; border-right: 1px solid #AAAAAA; border-bottom: 1px solid #AAAAAA; font-weight: bold; padding: 10px;}
div.resultMsg { background-color : #CCCCCC; color: #FF6666; text-align: center; border-top: 1px solid silver; border-left: 1px solid silver; font-weight: bold; border-right: 1px solid #666666; border-bottom: 1px solid #666666; padding: 10px;}
div.xoopsCode { background: #ffffff; border: 1px inset #000080; font-family: "Courier New",Courier,monospace; padding: 0px 6px 6px 6px;}
div.xoopsQuote { background: #ffffff; border: 1px inset #000080; font-family: "Courier New",Courier,monospace; padding: 0px 6px 6px 6px;}
.comTitle {font-weight: bold; margin-bottom: 2px;}
.comText {padding: 2px;}
.comUserStat {font-size: 10px; color: #CA0404; font-weight:bold; border: 1px solid silver; background-color: #404040; margin: 2px; padding: 2px;}
.comUserStatCaption {font-weight: normal;}
.comUserStatus {margin-left: 2px; margin-top: 10px; color: #CA0404; font-weight:bold; font-size: 10px;}
.comUserRank {margin: 2px;}
.comUserRankText {font-size: 10px;font-weight:bold;}
.comUserRankImg {border: 0;}
.comUserName {}
.comUserImg {margin: 2px;}
.comDate {font-weight: normal; font-style: italic; font-size: smaller}
.comDateCaption {font-weight: bold; font-style: normal;}
#footer {text-align:center;}
#footer td {text-align:center;}