.oew-effect-4 a {
  position: relative;
  display: inline-block;
  padding: 0 0 10px;
}

.oew-effect-4 a::after {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 1px;
  background: rgba(0,0,0,0.1);
  content: '';
  opacity: 0;
  -webkit-transition: height 0.3s, opacity 0.3s, -webkit-transform 0.3s;
  -moz-transition: height 0.3s, opacity 0.3s, -moz-transform 0.3s;
  transition: height 0.3s, opacity 0.3s, transform 0.3s;
  -webkit-transform: translateY(-10px);
  -moz-transform: translateY(-10px);
  transform: translateY(-10px);
}

.oew-effect-4 a:hover::after,
.oew-effect-4 a:focus::after {
  height: 5px;
  opacity: 1;
  -webkit-transform: translateY(0px);
  -moz-transform: translateY(0px);
  transform: translateY(0px);
}