/* =========
   Get Fonts */
@import url(https://fonts.googleapis.com/css?family=Quicksand);
@import url(https://netdna.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.css);
/* ================
   Assign Variables */
/* ===========================
   Setup Mixins/Helper Classes */
.clearfix:after, .container:after, .tab-nav:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

/* ==========
   Setup Page */
*, *:before, *:after {
  box-sizing: border-box;
}

body {
  background-image: repeating-linear-gradient(80deg, hsl(55,0%,7%) 0px, hsl(55,0%,7%) 10px,transparent 10px, transparent 12px),repeating-linear-gradient(228deg, hsl(55,0%,7%) 0px, hsl(55,0%,7%) 10px,transparent 10px, transparent 12px),repeating-linear-gradient(127deg, hsl(55,0%,7%) 0px, hsl(55,0%,7%) 10px,transparent 10px, transparent 12px),linear-gradient(90deg, rgb(136, 136, 136),rgb(92, 92, 92));
  color: #fff;
  font-family: 'Quicksand', sans-serif;
}

/* =================
   Container Styling */
.container {
  position: relative;
  padding: 3em;
  border-radius: 10px;
  margin: 150px auto;
  max-width: 960px;
}

/* ===========
   Tab Styling */
.tab-group {
  position: relative;
  border: 1px solid #eee;
  margin-top: 2.5em;
  border-radius: 0 0 10px 10px;
}
.tab-group section {
  opacity: 0;
  height: 0;
  padding: 0 1em;
  overflow: hidden;
  transition: opacity 0.4s ease, height 0.4s ease;
}
.tab-group section.active {
  opacity: 1;
  height: auto;
  overflow: visible;
}

.tab-nav {
  list-style: none;
  margin: -2.5em -1px 0 0;
  padding: 0;
  height: 2.5em;
  overflow: hidden;
}
.tab-nav li {
  display: inline;
}
.tab-nav li a {
  top: 1px;
  position: relative;
  display: block;
  float: left;
  border-radius: 10px 10px 0 0;
  background: #eee;
  line-height: 2em;
  padding: 0 1em;
  text-decoration: none;
  color: grey;
  margin-top: .5em;
  margin-right: 1px;
  transition: background .2s ease, line-height .2s ease, margin .2s ease;
}
.tab-nav li.active a {
  background: #6EB590;
  color: white;
  line-height: 2.5em;
  margin-top: 0;
}