.b-ext div.tabs {margin: 1em 0;}
.b-ext ul.tabs {margin: 0 0 .5em;padding: 0;list-style: none;}
.b-ext .tabs>li {display: inline-block;margin-right: .3em;}
.b-ext [dir=rtl] .tabs>li {margin-right: 0;margin-left: .3em;}
.b-ext .tabs a {display: block;padding: .2em 1em;text-decoration: none;}
.b-ext .tabs a.is-active {background-color: #eee;}
.b-ext .tabs a:focus, .b-ext .tabs a:hover {background-color: #f5f5f5;}