File: htdocs/modules/system/themes/default/css/tabs.css

/*
 * Default Admin Theme
 *
 * @copyright       (c) 2000-2015 XOOPS Project (www.xoops.org)
 * @license         http://www.fsf.org/copyleft/gpl.html GNU public license 3.0
 * @package         themes
 * @since           2.5.x
 * @author          Xoops Design Theme <http://www.xoops.org/>
 * @maintained      Xoops Design Theme <http://www.xoops.org/>
 *
*/
.tabs {
    list-style:none;
    margin:0 !important;
    padding: 10px 0 0 0;
    height:30px;
    border-bottom: 3px solid #393e41;
}

/* single tab */
.tabs li {
    float:left;
    text-indent:0;
    padding:0;
    margin:0 !important;
    list-style-image:none !important;
    list-style-type: none;
}

/* link inside the tab. uses a background image */
.tabs a {
    font-size:11px;
    display:block;
    width: 55px;
    text-align:center;
    text-decoration:none;
    color:#000;
    padding: 5px 0 0 0;
    margin:  -10px 1px 0 1px  !important;
    position:relative;
    top:1px;
    background-color: #f1f1f1 !important;
    border: 1px solid #ddd;
    border-bottom-width: 0;
    border-top-left-radius:    5px;
    -moz-border-radius-topleft: 5px;
    -webkit-border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    -moz-border-radius-topright: 5px;
    -webkit-border-top-right-radius: 5px;
    box-shadow: 0 20px 10px -10px rgba(255, 255, 255, 0.3) inset;
    -moz-box-shadow: 0 20px 10px -10px rgba(255, 255, 255, 0.3) inset;
    -webkit-box-shadow: 0 20px 10px -10px rgba(255, 255, 255, 0.3) inset;
}


.tabs a:active {
    outline:none;

}

/* when mouse enters the tab move the background image */
.tabs a:hover {
    color:#fff;
    background-color: #dedede !important;
}

/* active tab uses a class name "current". it's highlight is also done by moving the background image. */
.tabs .current, .tabs .current:hover, .tabs li.current a {
    cursor:default !important;
    color:#000 !important;
    background-color: #dedede !important;
}

/* initially all panes are hidden */
.panes .pane {
    display:none;
}

.panes ul {
    border: 1px solid #ddd;
    padding: 5px;
    margin: 5px 0 5px 0;
    background-color: #f4f4f4 !important;
    -moz-border-radius: 6px;
    -webkit-border-radius: 6px;
    border-radius: 6px;
}

.panes li {
    list-style-type: none;
    padding: 5px;
    background-color: #efefef;
    border-bottom: 1px solid #f4f4f4;
}

.help {
    vertical-align: middle;
    text-decoration: none;
    background-color: #f0f0f0;
    padding: 8px;
    margin-bottom: 3px;
    text-align: justify;
    border: 1px solid #f9f9f9;
    -moz-border-radius: 9px;
    -webkit-border-radius: 9px;
    border-radius: 9px;
    box-shadow: 0 20px 10px -10px rgba(255, 255, 255, 0.3) inset;
    -moz-box-shadow: 0 20px 10px -10px rgba(255, 255, 255, 0.3) inset;
    -webkit-box-shadow: 0 20px 10px -10px rgba(255, 255, 255, 0.3) inset;
}

.help a {
   padding-bottom: 5px !important;
   color: #000;
}

.help p {
      font-size: 90%;
      color: #666666;
}