.g5plus-image-box {
  position: relative;
}
.g5plus-image-box .content-hover {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  transform: translateY(-50%);
  text-align: center;
  opacity: 0;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
  -o-transition: all 0.5s;
  transition: all 0.5s;
  color: #FFFFFF;
  z-index: 2;
  padding: 15px;
}
.g5plus-image-box > img {
  width: 100%;
  height: auto;
}
.g5plus-image-box:before {
  content: '';
  display: block;
  /*background-color: @accent_color;*/
  z-index: 1;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -ms-transition: all 0.3s;
  -o-transition: all 0.3s;
  transition: all 0.3s;
  opacity: 0;
}
.g5plus-image-box:hover:before,
.g5plus-image-box.hover-active:before,
.g5plus-image-box:hover .content-hover,
.g5plus-image-box.hover-active .content-hover {
  opacity: 1;
}
.g5plus-image-box.hover-active:hover:before,
.g5plus-image-box.hover-active:hover .content-hover {
  opacity: 0;
}