Hi thought this would be helpful for noobies like me doing their store up for the first time - it will help explain what you are looking at. It's a help sheet only - please fool around with yours

my comments are in blue the rest is the code

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

body { This is the area around the main cart
margin: 0;
font-family: verdana, arial, helvetica, sans-serif; this is the font used un the cart font-size: 62.5%;
color: #000000; this is the text colour on your page – i.e. the little home link in breadcrumbs
background-color: #2c445d; Colours the Background around the main cart }

a img {border: none; }Unsure

a:link, #navEZPagesTOC ul li a {the colour of the Log yourself in link and the links of your products etc
color: #00ffff;
text-decoration: none;
}

a:visited {links that you’ve been too
color: #09F;
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: #FF0000; the colour of the link when the mouse pointer is over it }

a:active {Unsure
color: #0FF;
}

h1 {
font-size: 1.5em; size of it
color: #9a9a9a; Changes the size of the Titles of your shopping cart items – i.e. if you had an item under the heading of artwork – then the title of artwork is controlled here
}

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: Comment Tab - Open
h1, h2, h3, h4, h5, h6, p {
position: relative;
}
*html .centerColumn {Unsure
height: 1%;
}
*/ Comment Tab – Close

CODE {
font-family: arial, verdana, helvetica, sans-serif; changing this changes these types of messages

This content is located in the file at: /languages/english/html_includes/YOUR_TEMPLATE/define_main_page.php

font-size: 1em; this changes the size of the above
}

FORM, SELECT, INPUT {
display: inline;
font-size: 1em; when I changed this to 15 the top bar where the Home link is repeated continually for a bit margin: 0.1em;
}

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

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

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

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

LABEL, h4.optionName {
line-height: 1.5em; changed the heading of the right side boxes to get a repeating action padding: 0.2em;
}

LABEL.checkboxLabel, LABEL.radioButtonLabel {
margin: 0.5em 0.3em; changed the location of words to buttons on the client registration page moved it further right
}

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

#logo {display:none;} Unsure
LABEL.inputLabel { Unsure
width: 9em;
float: left;
}

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

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

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

P, ADDRESS {Unsure
padding: 0.5em; }

ADDRESS {Unsure
font-style: normal; }

.clearBoth {Unsure
clear: both;
}

HR {
height: 15px; Changes the size of the horizontal lines
margin-top: 0.5em;
border: none;
border-bottom: 1px solid #000000; changes the solid density of the hr and the colour }

/*warnings, errors, messages*/ Comment Tab – Open and Close

.messageStackWarning, .messageStackError, .messageStackSuccess, .messageStackCaution { Unsure

line-height: 1.8em;
padding: 0.2em;
border: 1px solid #9a9a9a;
}

.messageStackWarning, .messageStackError { Unsure

background-color: #ff0000;
color: #ffffff;
}

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

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

/*wrappers - page or section containers*/ Comment Tab – Open and Close

#mainWrapper {
background-color: #006666; Changes the main colour inside the cart text-align: left;
width: 750px; Changes the width of the cart – try to leave at 750 for old monitors are only 800 px wide
vertical-align: top;
border: 1px solid #000000; Changes the line that goes around the outside of the cart }

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

#logoWrapper{
background-image: url(/images/header_bg.jpg); Where the header image is background-repeat: repeat-x;
background-color: #000000; Unsure
height:300px; the size of the image in the header
}

#navColumnOneWrapper, #navColumnTwoWrapper, #mainWrapper {
margin: auto;
}
#navColumnOneWrapper, #navColumnTwoWrapper {
margin-left: 0.5em; pushes left row boxes to the right
margin-right: 0.5em; pushes right row boxes to the left
}

#tagline {
color:#000000; Unsure – as I may have removed this before doing this. font-size: 2em;
text-align : center;
vertical-align: middle;
}

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

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

.wrapperAttribsOptions {
margin: 0.3em 0em; Unsure
}

/*navigation*/ Comment Tab – Open and Close

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

#navMainWrapper, #navSuppWrapper, #navCatTabsWrapper {
margin: 0em;
background-color: #abbbd3; Unsure
background-image: url( /images/tile_back.gif); this background image at the top of your store and side boxes padding: 0.5em 0.2em; this controls the box – or that little annoying line you sometimes get at the top of the header image – also doe some of the others – look around your store font-weight: bold; Unsure color: #000000; Unsure
height: 1%; Unsure }

#navCatTabsWrapper {
background-color: #000000; changes category colour under the header color: #9a9a9a; Unsure
background-image:none; Unsure}

#navMain ul, #navSupp ul, #navCatTabs ul {
margin: 0;
padding: 0.5em 0em; changes some dimensions of boxes – look around 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: 0em 0.5em;
margin: 0;
color: #ffffff; changed the Home links white-space: nowrap;
}

#navCatTabs ul li a {
color: #000; changes the colour of the links in the categories line }

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

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

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

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

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

#navMainSearch { Unsure
float: right;
}

#navBreadCrumb {
padding: 0.5em 0.5em;
background-color: #006666; changes the colour of the breadcrumbs line font-size: 0.95em;
font-weight: bold;
margin: 0em;
}

#navEZPagesTop { Unsure 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; changing this colours in the left and right side box columns }

/*The main content classes*/ Comment Tab – Open and Close

#contentColumnMain, #navColumnOne, #navColumnTwo, .centerBoxContents, .specialsListBoxContents, .categoryListBoxContents, .additionalImages, .centerBoxContentsSpecials, .centerBoxContentsAlsoPurch, .centerBoxContentsFeatured, .centerBoxContentsNew, .alert {
vertical-align: top;
}

/*.content,*/ Comment Tab – Open and Close

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

.alert {
color: #FF0000; changing this changes the warnings in the client logon and maybe other areas too
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*/ Comment Tab – Open and Close – for the shopping cart I made no changes
#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*/ Comment Tab – Open and Close

#productMainImage, #reviewsInfoDefaultProductImage, #productReviewsDefaultProductImage, #reviewWriteMainImage {
margin: 0em 1em 1em 0em ;
}

.categoryIcon {}

#cartImage {
margin: 0.5em 1em;
}

/*Attributes*/ Comment Tab – Open and Close

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

.attributesComments {}

/*list box contents*/ Comment Tab – Open and Close

.centerBoxContents, .specialsListBoxContents, .categoryListBoxContents, .additionalImages, .centerBoxContentsSpecials, .centerBoxContentsAlsoPurch, .centerBoxContentsFeatured, .centerBoxContentsNew {
margin: 1em 0em;
}

.centerBoxWrapper {
border: 1px solid #9a9a9a; changes with of the box- usually seen around new products height: 1%;
margin: 1.1em 0;
}

h2.centerBoxHeading { changes new product heading
font-size: 1.3em;
color: #ffffff;
}

/*sideboxes*/ Comment Tab – Open and Close

.columnLeft {}

h3.leftBoxHeading, h3.leftBoxHeading a,
h3.rightBoxHeading, h3.rightBoxHeading a {
font-size: 1em; WOW change this to 15 and see what you get - lol color: #ffffff;
}
#manufacturersHeading, #currenciesHeading, #musicgenresHeading, #recordcompaniesHeading, #searchHeading, #search-headerHeading {
font-size: 0.9em; pretty clear what this changes
color: #ffffff;
}

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

.leftBoxContainer, .rightBoxContainer { increases the spaces between the boxes on the left and right margin: 0em;
border: 1px solid #000000;
border-bottom: 5px solid #000000;
margin-top: 1.5em;
}

.sideBoxContent { changes colour of side boxes ad the padding
background-color: #2c445d;
padding: 0.4em;
}

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

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

Didn’t do any thing else from here down

.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: #000;
}

#upProductsHeading {
text-align: left;
}

#upDateHeading {
text-align: right;
}



/* categories box parent and child categories */ Comment Tab – Open and Close

A.category-top, A.category-top:visited {
color: #ccccff;
text-decoration: none;
}
A.category-links, A.category-links:visited {
color: #00ffff;
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 */ Comment Tab – Open and Close

/*misc*/ Comment Tab – Open and Close

.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;*/ Comment Tab – Open and Close
}

#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(file:///E|/my%20websites%20folder/public/mystore/includes/templates/MyTemplates/images/tile_back.gif);
height: 2em;
color: #00ffff;
}

#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;
}