.tab-group{
  display: flex;
  justify-content: center;
}
.tab{
  flex-grow: 1;
  padding:10px;
  list-style:none;
  border:solid 1px #CCC;
  text-align:center;
  cursor:pointer;
}
.panel-group{
  border:solid 1px #CCC;
  border-top:none;
  background:#eee;
  padding: 15px;
}
.panel{
  display:none;
}
.tab.is-active{
  background:#00957B;
  color:#FFF;
  transition: all 0.2s ease-out;
}
.panel.is-show{
  display:block;
}