/* animated transitions */
.trans-right {
	box-shadow: 0 0 1px rgba(0, 0, 0, 0);
	display: inline-block;
	position: relative;
	transform: perspective(1px) translateZ(0);
	transition-property: color;
	transition-duration: 0.3s;
	vertical-align: middle;
}
.trans-right:before {
	border-radius: 6pt;
	bottom: 0;
	content: '';
	top: 0;
	left: 0;
	right: 0;
	position: absolute;
	transform: scaleX(0);
	transform-origin: 0 50%;
	transition-property: transform;
	transition-duration: 0.3s;
	transition-timing-function: ease-out;
	z-index: -1;
}
.trans-right:hover, .trans-right:focus, .trans-right:active {
	color: white;
}
.trans-right:hover:before, .trans-right:focus:before, .trans-right:active:before {
	transform: scaleX(1);
}

.trans-left {
	box-shadow: 0 0 1px rgba(0, 0, 0, 0);
	display: inline-block;
	position: relative;
	transform: perspective(1px) translateZ(0);
	transition-property: color;
	transition-duration: 0.3s;
	vertical-align: middle;
}
.trans-left:before {
	border-radius: 6pt;
	bottom: 0;
	content: '';
	top: 0;
	left: 0;
	right: 0;
	position: absolute;
	transform: scaleX(0);
	transform-origin: 100% 50%;
	transition-property: transform;
	transition-duration: 0.3s;
	transition-timing-function: ease-out;
	z-index: -1;
}
.trans-left:hover, .trans-left:focus, .trans-left:active {
	color: white;
}
.trans-left:hover:before, .trans-left:focus:before, .trans-left:active:before {
	transform: scaleX(1);
}

.trans-center {
  display: inline-block;
  vertical-align: middle;
  transform: perspective(1px) translateZ(0);
  box-shadow: 0 0 1px rgba(0, 0, 0, 0);
  position: relative;
  overflow: hidden;
  transition-property: color;
  transition-duration: 0.3s;
}
.trans-center:before {
  content: '';
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 100%;
  transform: scale(0);
  transition-property: transform;
  transition-duration: 0.3s;
  transition-timing-function: ease-out;
}
.trans-center:hover, .trans-center:focus, .trans-center:active {
  color: white;
}
.trans-center:hover:before, .trans-center:focus:before, .trans-center:active:before {
  transform: scale(2);
}