div.tabs {
  margin: 1em 0;
}
ul.tabs {
  max-width: 1200px;
  border-bottom: 1px solid #bbb;
  margin: 0 auto !important;
  list-style: none;
  margin: 0 0 0.5em;
  padding: 0;
}
.tabs > li {
  display: inline-block;
  margin-bottom: 0 !important;
  margin-right: 0.3em; /* LTR */
}
[dir="rtl"] .tabs > li {
  margin-left: 0.3em;
  margin-right: 0;
}
.tabs a {
  display: block;
  text-decoration: none;
  background-color: #ddd;
  border-color: #bbb;
  border-style: solid solid none solid;
  border-width: 1px;
  height: auto;
  margin-right: 0.5em;
  padding: 0 1em;
  top: 1px;
  position: relative;
}
.tabs a.is-active {
  background-color: #eee;
  background-color: #fff;
  border: 1px solid #bbb;
  border-bottom: 1px solid #fff;
}
.tabs a:focus,
.tabs a:hover {
  background-color: #f5f5f5;
}