OK, I'm at a loss here. The site shows well in IE7, but not IE8 and FF where the Center Content aligns to far to the left. I looked at the other postings, but nothing helped.

ZenCart 1.3.8a
Site: www.debsdesigns.com

As you see the left menu is too far over to "compensate" for the center content being to far to the left. The left menu should be aligned with the border in the background the same way as the right menu.

The main CSS is as follows:

/**
* Main CSS Stylesheet
*
* @package templateSystem
* @copyright Copyright 2003-2007 Zen Cart Development Team
* @copyright Portions Copyright 2003 osCommerce
* @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
* @version $Id: stylesheet.css 5952 2007-03-03 06:18:46Z drbyte $
*/

body {
margin: 0;
font-family: verdana, arial, helvetica, sans-serif;
font-size: 62.5%;
color: #000000;
background-color: #e5edf5;
}

a img {border: none; }

a:link, #navEZPagesTOC ul li a {
color: #008000;
text-decoration: none;
}

a:visited {
color: #008000;
text-decoration: none;
}

a:hover, #navEZPagesTOC ul li a:hover, #navMain ul li a:hover, #navSupp ul li a:hover, #navCatTabs ul li a:hover {
color: #c000c0;
}

a:active {
color: #0000FF;
}

h1 {
font-size: 1.5em;
color: #9a9a9a;
}

h2 {
font-size: 1.4em;
}

h3 {
font-size: 1.3em;
}

h4, h5, h6, LABEL, h4.optionName, LEGEND, ADDRESS, .sideBoxContent, .larger{
font-size: 1.1em;
}

.biggerText {
font-size: 1.2em;
}

h1, h2, h3, h4, h5, h6 {
margin: 0.3em 0;
}

/* Might uncomment either or both of these if having problems with IE peekaboo bug:
h1, h2, h3, h4, h5, h6, p {
position: relative;
}
*html .centerColumn {
height: 1%;
}
*/

CODE {
font-family: arial, verdana, helvetica, sans-serif;
font-size: 1em;
}

FORM, SELECT, INPUT {
display: inline;
font-size: 1em;
margin: 0.1em;
}

TEXTAREA {
margin: auto;
display: block;
width: 95%;
}

input:focus, select:focus, textarea:focus {
background: #E4FEF5;
}

FIELDSET {
padding: 0.5em;
margin: 0.5em 0em;
border: 1px solid #cccccc;
}

LEGEND {
font-weight: bold;
padding: 0.3em;
color: black;
}

LABEL, h4.optionName {
line-height: 1.5em;
padding: 0.2em;
}

LABEL.checkboxLabel, LABEL.radioButtonLabel {
margin: 0.5em 0.3em;
}

#logo, .centerBoxContents, .specialsListBoxContents, .categoryListBoxContents, .centerBoxContentsAlsoPurch, .attribImg {
float: left;
}

LABEL.inputLabel {
width: 9em;
float: left;
}

LABEL.inputLabelPayment {
width: 14em;
float: left;
padding-left: 2.5em;
}

LABEL.selectLabel, LABEL.switchedLabel, LABEL.uploadsLabel {
width: 11em;
float: left;
}

#checkoutPayment LABEL.radioButtonLabel {
font-weight: bold;
}

P, ADDRESS {
padding: 0.5em;
}

ADDRESS {
font-style: normal;
}

.clearBoth {
clear: both;
}

HR {
height: 1px;
margin-top: 0.5em;
border: none;
border-bottom: 1px solid #9a9a9a;
}

/*warnings, errors, messages*/
.messageStackWarning, .messageStackError, .messageStackSuccess, .messageStackCaution {
line-height: 1.8em;
padding: 0.2em;
border: 1px solid #9a9a9a;
}

.messageStackWarning, .messageStackError {
background-color: #ff0000;
color: #ffffff;
}

.messageStackSuccess {
background-color: #99FF99;
color: #000000;
}

.messageStackCaution {
background-color: #FFFF66;
color: #000000;
}


/*wrappers - page or section containers*/
#mainWrapper {
background: url(../images/bckgrd_borders_850_10.jpg) repeat;
text-align: left;
width: 850px;
vertical-align: top;
border: 0px solid #9a9a9a;
}

#headerWrapper, #contentMainWrapper, #cartBoxListWrapper, #ezPageBoxList, #cartBoxListWrapper ul, #ezPageBoxList ul, #mainWrapper, #popupAdditionalImage, #popupImage {
margin: 0em;
padding: 0em;
}

#logoWrapper{
background-image: url(../images/header_bg.jpg);
background-repeat: repeat-x;
background-color: #ffffff;
height:240px;
}

#navColumnOneWrapper, #navColumnTwoWrapper, #mainWrapper {
margin: auto;
}
#navColumnOneWrapper, #navColumnTwoWrapper {
margin-left: 0.5em;
margin-right: 0.5em;
}

#tagline {
color:#000000;
font-size: 2em;
text-align : center;
vertical-align: middle;
}

#sendSpendWrapper {
border: 1px solid #cacaca;
float: right;
margin: 0em 0em 1em 1em;
}

.floatingBox, #accountLinksWrapper, #sendSpendWrapper, #checkoutShipto, #checkoutBillto, #navEZPagesTOCWrapper {
margin: 0;
width: 47%;
}

.wrapperAttribsOptions {
margin: 0.3em 0em;
}

/*navigation*/

.navSplitPagesResult {}
.navSplitPagesLinks {}

.navNextPrevCounter {
margin: 0em;
font-size: 0.9em;
}
.navNextPrevList {
display: inline;
white-space: nowrap;
margin: 0;
padding: 0.5em 0em;
list-style-type: none;
}

#navMainWrapper, #navSuppWrapper, #navCatTabsWrapper {
margin: 0em;
background-color: #004000;
background-image: url(../images/header_bg_top_850_50.jpg);
padding: 1.25em 4.2em;
font-weight: bold;
color: #ffffff;
height: 1%;
}

#navCatTabsWrapper {
background-color: #ffffff;
color: #9a9a9a;
background-image:none;
}

#navMain ul, #navSupp ul, #navCatTabs ul {
margin: 0;
padding: 0.5em 0em;
list-style-type: none;
text-align: center;
line-height: 1.5em;
}

#navMain ul li, #navSupp ul li, #navCatTabs ul li {
display: inline;
}

#navMain ul li a, #navSupp ul li a, #navCatTabs ul li a {
text-decoration: none;
padding: 2em 0.5em;
margin: 0;
color: #ffffff;
white-space: nowrap;
}

#navCatTabs ul li a {
color: #9a9a9a;
}

#navEZPagesTOCWrapper {
font-weight: bold;
float: right;
height: 1%;
border: 1px solid #9a9a9a;
}

#navEZPagesTOC ul {
margin: 0;
padding: 0.5em 0em;
list-style-type: none;
line-height: 1.5em;
}

#navEZPagesTOC ul li {
white-space: nowrap;
}

#navEZPagesTOC ul li a {
padding: 0em 0.5em;
margin: 0;
}

#navCategoryIcon, .buttonRow, #indexProductListCatDescription {
margin: 0.5em;
}

#navMainSearch {
float: right;
}

#navBreadCrumb {
padding: 0.5em 0.5em;
background-color: #ffffff;
font-size: 0.95em;
font-weight: bold;
margin: 0em;
}

#navEZPagesTop {
background-color: #abbbd3;
background-image: url(../images/tile_back.gif);
font-size: 0.95em;
font-weight: bold;
margin: 0em;
padding: 0.5em;
}

#navColumnOne, #navColumnTwo {
background-color: transparent;
}

/*The main content classes*/
#contentColumnMain, #navColumnOne, #navColumnTwo, .centerBoxContents, .specialsListBoxContents, .categoryListBoxContents, .additionalImages, .centerBoxContentsSpecials, .centerBoxContentsAlsoPurch, .centerBoxContentsFeatured, .centerBoxContentsNew, .alert {
vertical-align: top;
}

/*.content,*/ #productDescription, .shippingEstimatorWrapper {
/*font-size: 1.2em;*/
padding: 0.5em;
}

.alert {
color: #FF0000;
margin-left: 0.5em;
}
.advisory {}
.important {
font-weight: bold;
}
.notice {}
.rating{}
.gvBal {
float: right;
}
.centerColumn, #bannerOne, #bannerTwo, #bannerThree, #bannerFour, #bannerFive, #bannerSix {
padding: 0.8em;
}

.smallText, #siteinfoLegal, #siteinfoCredits, #siteinfoStatus, #siteinfoIP {
font-size: 0.9em;
}

/*Shopping Cart Display*/
#cartAdd {
float: right;
text-align: center;
margin: 1em;
border: 1px solid #000000;
padding: 1em;
}

.tableHeading TH {
border-bottom: 1px solid #9a9a9a;
}

.tableHeading, #cartSubTotal {
background-color: #e9e9e9;
}

#cartSubTotal {
border-top: 1px solid #cccccc;
font-weight: bold;
text-align: right;
line-height: 2.2em;
padding-right: 2.5em;
}

.tableRow, .tableHeading, #cartSubTotal {
height: 2.2em;
}

.cartProductDisplay, .cartUnitDisplay, .cartTotalDisplay, .cartRemoveItemDisplay, .cartQuantityUpdate, .cartQuantity, #cartInstructionsDisplay, .cartTotalsDisplay {
padding: 0.5em 0em;
}

.cartUnitDisplay, .cartTotalDisplay {
text-align: right;
padding-right: 0.2em;
}

#scUpdateQuantity {
width: 2em;
}

.cartQuantity {
width: 4.7em;
}

.cartNewItem {
color: #33CC33;
position: relative; /*do not remove-fixes stupid IEbug*/
}

.cartOldItem {
color: #660099;
position: relative; /*do not remove-fixes stupid IEbug*/
}

.cartBoxTotal {
text-align: right;
font-weight: bold;
}

.cartRemoveItemDisplay {
width: 3.5em;
}

.cartAttribsList {
margin-left: 1em;
}

#mediaManager {
width: 50%;
margin: 0.2em;
padding: 0.5em;
background-color: #E4FEf5;
border: 1px solid #003D00;
}
.mediaTitle {
float: left;
}
.mediaTypeLink {
float: right;
}

.normalprice, .productSpecialPriceSale {
text-decoration: line-through;
}

.productSpecialPrice, .productSalePrice, .productSpecialPriceSale, .productPriceDiscount {
color: #ff0000;
}

.orderHistList {
margin: 1em;
padding: 0.2em 0em;
list-style-type: none;
}

#cartBoxListWrapper ul, #ezPageBoxList ul {
list-style-type: none;
}

#cartBoxListWrapper li, #ezPageBoxList li, .cartBoxTotal {
margin: 0;
padding: 0.2em 0em;
}

#cartBoxEmpty, #cartBoxVoucherBalance {
font-weight: bold;
}

.totalBox {
width: 5.5em;
text-align: right;
padding: 0.2em;
}

.lineTitle, .amount {
text-align: right;
padding: 0.2em;
}

.amount {
width: 5.5em;
}

/*Image Display*/
#productMainImage, #reviewsInfoDefaultProductImage, #productReviewsDefaultProductImage, #reviewWriteMainImage {
margin: 0em 1em 1em 0em ;
}

.categoryIcon {}

#cartImage {
margin: 0.5em 1em;
}

/*Attributes*/
.attribImg {
width: 20%;
margin: 0.3em 0em;
}

.attributesComments {}

/*list box contents*/
.centerBoxContents, .specialsListBoxContents, .categoryListBoxContents, .additionalImages, .centerBoxContentsSpecials, .centerBoxContentsAlsoPurch, .centerBoxContentsFeatured, .centerBoxContentsNew {
margin: 1em 0em;
}

.centerBoxWrapper {
border: 1px solid #9a9a9a;
height: 1%;
margin: 1.1em 0;
}

h2.centerBoxHeading {
font-size: 1.3em;
color: #ffffff;
}

/*sideboxes*/
.columnLeft {}

h3.leftBoxHeading, h3.leftBoxHeading a,
h3.rightBoxHeading, h3.rightBoxHeading a {
font-size: 1em;
color: #ffffff;
}
#manufacturersHeading, #currenciesHeading, #musicgenresHeading, #recordcompaniesHeading, #searchHeading, #search-headerHeading {
font-size: 0.9em;
color: #ffffff;
}

.leftBoxHeading, .centerBoxHeading, .rightBoxHeading {
margin: 0em;
background-color: #abbbd3;
background-image: url(../images/tile_back.gif);
padding: 0.5em 0.2em;
}

.leftBoxContainer, .rightBoxContainer {
margin: 0.3em;
border: 1px solid #9a9a9a;
border-bottom: 5px solid #336633;
margin-top: 1.5em;
}

.sideBoxContent {
background-color: #ffffff;
padding: 0.4em;
}

h3.leftBoxHeading a:hover, h3.rightBoxHeading a:hover {
color: #FFFF33;
text-decoration: none;
}

.rightBoxHeading a:visited, .leftBoxHeading a:visited, .centerBoxHeading a:visited {
color: #FFFFFF;
}

.centeredContent, TH, #cartEmptyText, #cartBoxGVButton, #cartBoxEmpty, #cartBoxVoucherBalance, #navCatTabsWrapper, #navEZPageNextPrev, #bannerOne, #bannerTwo, #bannerThree, #bannerFour, #bannerFive, #bannerSix, #siteinfoLegal, #siteinfoCredits, #siteinfoStatus, #siteinfoIP, .center, .cartRemoveItemDisplay, .cartQuantityUpdate, .cartQuantity, .cartTotalsDisplay, #cartBoxGVBalance, .leftBoxHeading, .centerBoxHeading,.rightBoxHeading, .productListing-data, .accountQuantityDisplay, .ratingRow, LABEL#textAreaReviews, #productMainImage, #reviewsInfoDefaultProductImage, #productReviewsDefaultProductImage, #reviewWriteMainImage, .centerBoxContents, .specialsListBoxContents, .categoryListBoxContents, .additionalImages, .centerBoxContentsSpecials, .centerBoxContentsAlsoPurch, .centerBoxContentsFeatured, .centerBoxContentsNew, .gvBal, .attribImg {
text-align: center;
}

#bestsellers .wrapper {
margin: 0em 0em 0em 1.5em;
}

#bestsellers ol {
padding: 0;
margin-left: 1.1em;
}

#bestsellers li {
padding: 0;
margin: 0.3em 0em 0.3em 0em;
}

#bannerboxHeading {
background-color: #0000CC;
}

#upProductsHeading {
text-align: left;
}

#upDateHeading {
text-align: right;
}

/* categories box parent and child categories */
A.category-top, A.category-top:visited {
color: #008000;
text-decoration: none;
}
A.category-links:visited {
color: #004080;
text-decoration: none;
}
A.category-subs, A.category-products, A.category-subs:visited, A.category-products:visited {
color: #FF0000;
text-decoration: none;
}
SPAN.category-subs-parent {
font-weight: bold;
}
SPAN.category-subs-selected {
font-weight: bold;
}
/* end categories box links */

/*misc*/
.back {
float: left;
}

.forward, #shoppingCartDefault #PPECbutton {
float: right;
}

.bold {
font-weight: bold;
}

.rowOdd {
background-color: #E8E8E8;
height: 1.5em;
vertical-align: top;
}

.rowEven {
background-color: #F0F0F0;
height: 1.5em;
vertical-align: top;
}

.hiddenField {
display: none;
}
.visibleField {
display: inline;
}

CAPTION {
/*display: none;*/
}

#myAccountGen li, #myAccountNotify li {
margin: 0;
}

.accountTotalDisplay, .accountTaxDisplay {
width: 20%;
text-align: right;
/*vertical-align: top*/
}

.accountQuantityDisplay {
width: 10%;
vertical-align: top
}

TR.tableHeading {
background-color: #cacaca;
height: 2em;
}

.productListing-rowheading {
background-color: #abbbd3;
background-image: url(../images/tile_back.gif);
height: 2em;
color: #FFFFFF;
}

#siteMapList {
width: 90%;
float: right;
}

.ratingRow {
margin: 1em 0em 1.5em 0em;
}

LABEL#textAreaReviews {
font-weight: normal;
margin: 1em 0em;
}

#popupShippingEstimator, #popupSearchHelp, #popupAdditionalImage, #popupImage, #popupCVVHelp, #popupCouponHelp, #popupAtrribsQuantityPricesHelp, #infoShoppingCart {
background-color: #ffffff;
}
.information {padding: 10px 3px; line-height: 150%;}

#shoppingcartBody #shippingEstimatorContent {
clear: both;
}

.seDisplayedAddressLabel {
background-color:#85C285;
text-align: center;
}
.seDisplayedAddressInfo {
text-transform: uppercase;
text-align: center;
font-weight: bold;
}
#seShipTo {
padding: 0.2em;
}

a.category-top:hover { /* Added C. Arpin 28apr2009 works*/
color: #cc66cc;
/*text-decoration: none;*/
}

a.category-links:hover { /* Added C. Arpin 28apr2009 works*/
color: #cc66cc;
/*text-decoration: none; */
}

Can anybody help, please and thank you.

MingyQ