/* General styles */
* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialised;
}

body {
  margin-top: 5em;
  font: 300 20px/1.5 "Helvetica", Arial, sans-serif;
}
.container {
  width: 75%;
  margin: 0 auto;
}
.tabs,
.tab-contents {
  list-style: none;
  margin: 0;
  padding: 0;
}
.tabs {
  text-align: center;
  font-size: 0;
}
.tabs li {
  display: inline;
}
.tabs li a {
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  color: #8d8d8d;
  border: 1px solid #dcdada;
  background-color: #f5f5f5;
  height: 5em;
  line-height: 5em;
  display: inline-block;
  padding: 0 3em;
  transition: all 0.3s ease;
}

.tabs li a.active {
  background-color: #ffffff;
  color: #424242;
  cursor: default;
}

.tabs li a:hover:not(.active) {
  background-color: rgba(245, 245, 245, 0.25);
  color: #424242;
}

.tabs li:first-child a {
  border-radius: 5px 0 0 5px;
}

.tabs li:last-child a {
  border-radius: 0 5px 5px 0;
}

.tabs li:not(:first-child) {
  margin-left: -1px;
}

.tab-contents {
  width: 100%;
  position: relative;
}
.tab-contents li {
  padding: 2em;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.tab-contents li.visible {
  opacity: 1;
  pointer-events: auto;
}