Template:TabRow/themes.scss

.tabPanel {

 display: none;

}

.tab a {

 text-decoration: none;

}

.anchor_target {

 display: none;

}

.anchor_target:target + .tab a {

 opacity: 1;

}

.anchor_target:target + .tab.theme_headline a {

 border-bottom: 1px solid #41000;

}

.tab a {

 display: inline-block;
 padding: 0 1em;
 margin: 0 .5em .5em;
 opacity: 0.5;
 border-bottom: none;

}