<div id="wrapper">
  <div id="bulbasaur" class="pokemon"></div>
  <div id="charmander" class="pokemon"></div>
  <div id="squirtle" class="pokemon"></div>
  <div id="pikachu" class="pokemon"></div>
</div>

@import url(https://fonts.googleapis.com/css?family=Sigmar+One);

/* pokemone pictures */

.pokemon {
  width: 200px;
  height: 200px;
  /* center content using flex box */
  display: flex;
  justify-content: center;
  align-items: center;
  /* overlay */
  box-shadow: 0 0 0 100px inset, 0 0 5px grey;
  /* hover out transition */
  transition: box-shadow 1s;
  float: left;
  margin: 10px;
}


/* pokemone names */

.pokemon::after {
  width: 80%;
  height: 80%;
  display: block;
  white-space: pre;
  font: 15pt 'sigmar one';
  color: white;
  border: 2px solid;
  text-align: center;
  /* center content using flex box */
  display: flex;
  justify-content: center;
  align-items: center;
  /* hover out transition */
  transition: opacity 1s .5s;
}


/* reveal pokemone picture on hover */

.pokemon:hover {
  box-shadow: 0 0 0 5px inset, 0 0 5px grey, 0 0 10px grey inset;
  transition: box-shadow 1s;
}


/* hide pokemone name on hover */

.pokemon:hover::after {
  opacity: 0;
  transition: opacity .5s;
}

#bulbasaur {
  background-image: url(http://vignette4.wikia.nocookie.net/pokemon/images/2/21/001Bulbasaur.png/revision/latest/scale-to-width-down/200?cb=20140328190757);
  color: rgba(71, 121, 94, .9);
}

#bulbasaur::after {
  content: 'Bulbasaur';
}

#charmander {
  background-image: url(http://vignette2.wikia.nocookie.net/pokemon/images/7/73/004Charmander.png/revision/latest/scale-to-width-down/200?cb=20140724195345);
  color: rgba(221, 86, 63, .9);
}

#charmander::after {
  content: 'Charmander'
}

#squirtle {
  background-image: url(http://vignette2.wikia.nocookie.net/pokemon/images/3/39/007Squirtle.png/revision/latest/scale-to-width-down/200?cb=20140328191525);
  color: rgba(65, 102, 114, .9);
}

#squirtle::after {
  content: 'Squirtle'
}

#pikachu {
  background-image: url(http://vignette2.wikia.nocookie.net/pokemon/images/0/0d/025Pikachu.png/revision/latest/scale-to-width-down/200?cb=20140328192412);
  color: rgba(179, 152, 98, .9);
}

#pikachu::after {
  content: 'Pikachu'
}

#wrapper {
  width: 500px;
  height: 500px;
  margin:  auto;
}