Here is the stylesheet I used on this page, to replace the default one that comes with the Easy Tabs:
<style type="text/css">
.et-tab{position: relative;line-height: 28px;font-family: Arial, Helvetica, sans-serif;text-transform: uppercase;font-size: 12px;font-weight:bold;padding:3px 20px;display:inline-block;cursor:pointer;
-webkit-transition: background-color 0.2s linear;-moz-transition: background-color 0.2s linear;-o-transition: background-color 0.2s linear;
}
.et-activetab{
position: relative;height:32px;margin: 0 10px 0 0;background-color:#d2d2d2;color: #2B477D;
border-top: solid 1px #f2f2f2;border-left: solid 1px #f2f2f2;border-right: solid 1px #f2f2f2;
-webkit-border-top-left-radius: 6px;-webkit-border-top-right-radius: 6px;-moz-border-radius: 6px 6px 0 0;border-radius: 6px 6px 0 0;
background: #D2D2D2;background: -webkit-gradient(linear, 0 0, 0 bottom, from(#D2D2D2), to(#f2f2f2));background: -moz-linear-gradient(#D2D2D2, #f2f2f2);background: linear-gradient(#D2D2D2, #f2f2f2);-pie-background: linear-gradient(#D2D2D2, #f2f2f2);
behavior: url("/utilities/PIE.htc");
}
.et-inactivetab{
position: relative;height: 27px;margin: 0 10px 5px 0;background-color:#2B477D;color:#fff;
border-top: solid 1px #415F9D;border-left: solid 1px #415F9D;border-right: solid 1px #415F9D;
-webkit-border-top-left-radius: 6px;-webkit-border-top-right-radius: 6px;-moz-border-radius: 6px 6px 0 0;border-radius: 6px 6px 0 0;
-webkit-box-shadow: #2B477D 0px 4px 5px;-moz-box-shadow: #2B477D 0px 4px 5px;box-shadow: #2B477D 0px 4px 5px;
behavior: url("/utilities/PIE.htc");
}
.et-inactivetab:hover{
background-color:#5a87dd;
-webkit-box-shadow: #5a87dd 0px 4px 5px;-moz-box-shadow: #5a87dd 0px 4px 5px;box-shadow: #5a87dd 0px 4px 5px;
behavior: url("/utilities/PIE.htc");
}
.et-tabrow{white-space:nowrap;padding: 20px 20px 0 30px;}
.et-separator{display:none;}
.et-offscreen{position:absolute;max-height:1px;max-width:1px;top:-9999px;}
#MSO_ContentTable{background-color:#131925;}
.ms-wpContentDivSpace{width:700px;font-family: Arial, Helvetica, sans-serif;font-size: 13px;background-color:#f2f2f2;padding:20px;border: solid 1px #f2f2f2;
-webkit-border-radius: 12px;-moz-border-radius: 12px;border-radius: 12px;
}
</style>