body, html {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-size: 16px;
}

article { padding: 3rem 5rem; }

.tabs > nav ul {
  margin: 0;
  padding: 1rem 0 0 3rem;
  list-style-type: none;
  list-style: none;
  height: 1.9rem;
  border: 1px solid #999999;
  background-color: #3fa0ad;
}

.tabs > nav ul li {
  display: inline-block;
  padding: 0 1rem;
  margin: 0;
  height: 1.8rem;
  white-space: nowrap;
  line-height: 1.85rem;
  border-color: #999999;
  border-width: 1px;
  border-style: solid solid none solid;
  border-top-left-radius: 5px;
  border-top-right-radius: 5px;
  background-color: #d8d8d8;
  background-image: linear-gradient(to bottom, #f9f9f9, #d8d8d8)
}

.tabs > nav ul li:hover {
  background-color: #cacaca;
  background-image: linear-gradient(to bottom, #eeeeee, #cacaca)
}

.tabs > nav ul li.active {
  border-bottom: 2px solid #f9f9f9;
  background-image: none;
  background-color: #f9f9f9
}

.hiddenclass {display: none;}