@charset "UTF-8";

* {
  box-sizing:border-box;
}

body {
  font-family:sans-serif;
  overflow:hidden;
}

label {
  background:#444;
  color:#fff;
  transition:transform 400ms ease-out;
  display:inline-block;
  min-height:100%;
  width:100vw;
  height:100vh;
  position:relative;
  z-index:1;
  text-align:center;
  line-height:100vh;
}

form {
  position:absolute;
  top:0;
  left:0;
  bottom:0;
  right:0;
  white-space:nowrap;
}

input {
  position:absolute;
}

.keys {
  position:fixed;
  z-index:10;
  bottom:0;
  left:0;
  right:0;
  padding:1rem;
  color:#fff;
  text-align:center;
  transition:all 300ms linear;
  opacity:0;
}

input:focus ~ .keys {
  opacity:.8;
}

input:nth-of-type(1):checked ~ label:nth-of-type(1),input:nth-of-type(2):checked ~ label:nth-of-type(2),input:nth-of-type(3):checked ~ label:nth-of-type(3),input:nth-of-type(4):checked ~ label:nth-of-type(4) {
  z-index:0;
}

input:nth-of-type(1):checked ~ label {
  transform:translate3d(0,0,0);
}

input:nth-of-type(2):checked ~ label {
  transform:translate3d(-100%,0,0);
}

input:nth-of-type(3):checked ~ label {
  transform:translate3d(-200%,0,0);
}

input:nth-of-type(4):checked ~ label {
  transform:translate3d(-300%,0,0);
}

label {
  background:#444;
  background-size:cover;
  font-size:3rem;
}

label[for="diamonds"],label[for="hearts"] {
  background:#cc0000;
}

label:before,label:after {
  color:white;
  display:block;
  background:rgba(255,255,255,0.2);
  position:absolute;
  padding:1rem;
  font-size:3rem;
  height:10rem;
  vertical-align:middle;
  line-height:10rem;
  top:50%;
  transform:translate3d(0,-50%,0);
  cursor:pointer;
}

label:before {
  content:"\276D";
  right:100%;
  border-top-left-radius:50%;
  border-bottom-left-radius:50%;
}

label:after {
  content:"\276C";
  left:100%;
  border-top-right-radius:50%;
  border-bottom-right-radius:50%;
}