View file cms-master/views/admin/css/ui.tabs.css

ul.ui-tabs-nav {
    list-style: none;
    padding: 0;
    margin: 0;
    padding-left: 10px;
}
.ui-tabs-nav:after {
    display: block;
    clear: both;
    content: " ";
}

.ui-tabs-hide {
    display: none;
}

ul.ui-tabs-nav li {
    margin: 0;
    padding:0;
    margin-right: 5px;
    padding: 0 5px;
    float:left;
    height: 20px;
}

li.ui-tabs-selected {
    background-color: #6884AB;
}

li.ui-tabs-selected a {
    color: #FFFFFF;
}

/* Additional IE specific bug fixes... */
* html .ui-tabs-nav { /* auto clear @ IE 6 & IE 7 Quirks Mode */
    display: inline-block;
}
*:first-child+html .ui-tabs-nav  { /* auto clear @ IE 7 Standards Mode - do not group selectors, otherwise IE 6 will ignore complete rule (because of the unknown + combinator)... */
    display: inline-block;
}