.blink {
  text-decoration: blink;
  -webkit-animation-name: blinker;
  -webkit-animation-duration: 0.6s;
  -webkit-animation-iteration-count: infinite;
  -webkit-animation-timing-function: ease-in-out;
  -webkit-animation-direction: alternate;
}
.nav.nav-tabs>li>a>span{
  padding-bottom:4px;
}