.hvr-trim {
  display: inline-block;
  vertical-align: middle;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  box-shadow: 0 0 1px rgba(0, 0, 0, 0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}
.hvr-trim:before {
  content: '';
  position: absolute;
  border: white solid 2px;
  border-radius: 3px;
  top: 2px;
  left: 2px;
  right: 2px;
  bottom: 2px;
  opacity: 0;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
  -webkit-transition-property: opacity;
  transition-property: opacity;
}
.hvr-trim:hover:before, .hvr-trim:focus:before, .hvr-trim:active:before {
  opacity: 1;
}