giveItStyle.css

html,
body {
  background-color: #1F2837;
  height: 100%;
  position: relative;
}

.wrapper {
  height: 350px;
  width: 298px;
  top: 50%;
  left: 50%;
  margin-top: -175px;
  margin-left: -149px;
  position: absolute;
}

.puzzle-frame {
  background-color: #f3f3f3;
  height: 300px;
  width: 298px;
}

.puzzle-frame .puzzle-row,
.puzzle-frame .result {
  clear: both;
}

.puzzle-frame .puzzle-piece {
  float: left;
  width: 90px;
  height: 90px;
  padding-top: 20px;
  margin: 7px 0 0 7px;

  background-color: #fff;
  border: 1px solid transparent;
  border-radius: 2px;
  -webkit-box-shadow: 0 1px 1px rgba(0,0,0,.05);
  box-shadow: 0 1px 1px rgba(0,0,0,.05);
  cursor: pointer;
  box-sizing: border-box;

  color: #454545;
  font-size: 45px;
  text-align: center;
  text-transform: uppercase;
}

.puzzle-frame:not(.solved) .puzzle-piece:hover {
  color: #232323;
  -webkit-box-shadow: 0 1px 1px rgba(0,0,0,.3);
  box-shadow: 0 1px 1px rgba(0,0,0,.3);
}

.puzzle-piece.selected {
  border-color: #999;
  border-width: 4px;
  padding-top: 17px;
}

.instructions {
  color: #fff;
  text-align: center;
}

.plaque {
  font: bold 2em/1em "Helvetica Neue", Arial, Helvetica, Geneva, sans-serif;
  color: #fff4e3;
  text-align: center;
  background: #f3e2c7;
  background: -moz-linear-gradient(top,  #f3e2c7 0%, #c19e67 50%, #b68d4c 51%, #e9d4b3 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#f3e2c7), color-stop(50%,#c19e67), color-stop(51%,#b68d4c), color-stop(100%,#e9d4b3));
  background: -webkit-linear-gradient(top,  #f3e2c7 0%,#c19e67 50%,#b68d4c 51%,#e9d4b3 100%);
  background: -o-linear-gradient(top,  #f3e2c7 0%,#c19e67 50%,#b68d4c 51%,#e9d4b3 100%);
  background: -ms-linear-gradient(top,  #f3e2c7 0%,#c19e67 50%,#b68d4c 51%,#e9d4b3 100%);
  background: linear-gradient(to bottom,  #f3e2c7 0%,#c19e67 50%,#b68d4c 51%,#e9d4b3 100%);
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#f3e2c7', endColorstr='#e9d4b3',GradientType=0 );
  padding: 8px;
  border-radius: 8px;
  margin: 10px 0;
  text-shadow: 1px 1px 0 rgba(140,140,140,0.6) , -1px -1px 1px rgba(0,0,0,0.67);
  -webkit-box-shadow: 0 1px 1px rgba(0,0,0,.3);
  box-shadow: 0 1px 1px rgba(0,0,0,.3);
}