div.cssbox {
  display: inline-block;
}

div.cssbox img{
  width:100%;
  max-width:250px;
  height:auto;
  max-height:250px;
  border-radius: 4px;
}
div.cssbox img:hover {
	border-color: #37c0fb;
    border-width: 6px;
    border-style: solid;
	border-radius: 12px;
}

span.cssbox_full {
  z-index: 999;
  position: fixed;
  height: 100%;
  width: 100%;
  background-color: rgba(0,0,0,0.8);
  top: 0;
  left: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s linear;
}

span.cssbox_full img {
  position: fixed;
  background-color: white;
  margin: 0;
  padding: 0;
  max-width: 90%;
  max-width:850px;
  max-height: 90%;
  max-height:850px;
  top: 50%;
  left: 50%;
  margin-right: -50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 20px black;
}

a.cssbox_close{
  z-index: 999;
  position: fixed;
  text-decoration: none;
  visibility: hidden;
  color: white;
  font-size: 36px;
}

a.cssbox_close {
  top: 1%;
  right: 1%
}

a.cssbox_close::after {
  content: '\00d7';
}

a:target ~ a.cssbox_close {
  visibility: visible;
}

a:target > img.cssbox_thumb + span.cssbox_full {
  visibility: visible;
  opacity: 1;
  pointer-events: initial;
}

span.cssbox_full {
  cursor: initial;
}