.wrapper{
  display:flex;
  flex-direction: column;
  align-items: center;
}
.tab{
  cursor: pointer;
  padding:10px 20px;
  margin:0px 2px;
  background:#000;
  display:inline-block;
  color:#fff;
  border-radius:3px 3px 3px 3px;
  box-shadow: 0 0.5rem 0.8rem #00000080;
  width: 120px;
  height: 30px;
  font-size: 20px;
  font-weight: bold;
  text-decoration: none;
  line-height: 30px;
}
.panels{
  overflow:hidden;
}
.panel{
  display:none;
  animation: fadein .8s;
}
@keyframes fadein {
    from {
        opacity:0;
    }
    to {
        opacity:1;
    }
}
.panel-title{
  font-size:1.5em;
  font-weight:bold
}

.tabs .active {
  background:#fffffff6;
  color:#000;
  border-top: 3px solid #000;
}

.panels .active {
    display: block;
}
.tabcontent {
    display: none;    
}