.lightbox {
  position: fixed;
  top: 0;
  z-index: 99;
  background: rgba(0,0,0,.8);
  width: 100%;
  height: 100%;

}

.lightbox img {
  width: 85%;
  position: absolute;
  margin: auto;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.ico-cross.lightbox-close {
  color: white;
  font-size: 2.5em;
  right: 0;
  top: 0;
  position: absolute;
}

.ico-cross.lightbox-close:hover {
  cursor: pointer;
}

.ico-plus.lightbox-open {
  position: absolute;
  color: white;
  top: 5px;
  left: 5px;
  opacity: 0;
  transition: opacity .2s;
}

.image-lightbox:hover .ico-plus.lightbox-open {
  opacity: 1;
  transition: opacity .2s;
}