.instancename:hover {
  text-decoration: none;
}



.instancename:after {
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
  border: 1px solid #fff;
  bottom: 0px;
  content: " ";
  display: block;
  margin: 0 auto;
  position: relative;
  transition: all 280ms ease-in-out;
  width: 0;
}

.instancename:hover:after,
.instancename:hover:before {
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
  border-color: #3f51b5;
  transition: width 350ms ease-in-out;
  width: 100%;
}

.instancename:hover:before {
  bottom: auto;
  top: 0;
  width: 100%;
}