I have tried that too. It does not work. Here is what I have right now.

/*bof wrappers - page or section containers*/
#mainWrapper {background: transparent;text-align: left;width: 950px;vertical-align: top;position:relative; top:0px;}
#contentMainWrapper {background-color:#fff;}
#logoWrapper {background-image: url(../images/02mid.gif);}
#headerWrapper, #contentMainWrapper, #logoWrapper, #cartBoxListWrapper, #ezPageBoxList, #cartBoxListWrapper ul, #ezPageBoxList ul, #mainWrapper, #popupAdditionalImage, #popupImage {margin: 0em;padding: 0em;}
#navColumnOneWrapper, #navColumnTwoWrapper, #mainWrapper {margin: auto;}
#logo, .centerBoxContents, .specialsListBoxContents, .categoryListBoxContents, .centerBoxContentsAlsoPurch, .attribImg {float: left;}
#tagline {color:#b5b5b5;font-size: 1.65em;text-align :left;text-transform:lowercase;vertical-align:bottom;margin-left:10px;margin-bottom:25px;}
#logo {padding-top:15px;padding-left:15px;}
#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;}