/*div,*/
label {
  position: absolute;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  overflow: hidden;
}
/*body {
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
margin: 0;
padding: 0;*/
/*font-size: 1vmin;
  font-family: "Open Sans", sans-serif;
  color: white;
  background: #333;
}*/
/*body .message {
  top: 1vw;
  width: 100vw;
  text-align: center;
  font-size: 1.5em;
  line-height: 2em;
}
.message a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid #444;
}
.message a:hover {
  border-width: 3px;
}*/
.gallery-container {
  position: relative;
  margin-top: 50%;
  margin-bottom: -50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  padding-top: 100%;
}
.gallery-container [class*="item"] {
  width: 33%;
  height: 33%;
  border: 1px solid transparent;
  background: url() center center / cover no-repeat;
  transition: all 0.5s ease-in-out;
  z-index: 0;
}
.gallery-container [class*="item"]:hover {
  border: 1px solid white;
  z-index: 1;
}
.gallery-container [class*="item"]:nth-of-type(1) {
  top: 0;
  left: 0;
}
.gallery-container [class*="item"]:nth-of-type(2) {
  top: 0;
  left: 33%;
}
.gallery-container [class*="item"]:nth-of-type(3) {
  top: 0;
  left: 66%;
}
.gallery-container [class*="item"]:nth-of-type(4) {
  top: 33%;
  left: 0;
}
.gallery-container [class*="item"]:nth-of-type(5) {
  top: 33%;
  left: 33%;
}
.gallery-container [class*="item"]:nth-of-type(6) {
  top: 33%;
  left: 66%;
}
.gallery-container [class*="item"]:nth-of-type(7) {
  top: 66%;
  left: 0;
}
.gallery-container [class*="item"]:nth-of-type(8) {
  top: 66%;
  left: 33%;
}
.gallery-container [class*="item"]:nth-of-type(9) {
  top: 66%;
  left: 66%;
}
.gallery-container input {
  display: none;
}
.gallery-container input:checked + [class*="item"] {
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
}