*,
 *:after,
 *:before {
   -moz-box-sizing: border-box;
   -webkit-box-sizing: border-box;
   box-sizing: border-box;
   background-repeat: no-repeat;
   position: relative;
 }

#home {
  position: fixed; 
  top: 15px; 
  left: 30px; 
  z-index: 1000;
}

#home img {
  width: 60px; 
  height: auto; 
} 
 
 /* needs to correspond to piece.js */
 .white {
   background-color: #f0f0f0;
   border: 1px solid #bdbdbd;
   box-shadow: inset 0 0 1px 1px white;
 }
 
 .blue {
   background-color: #3498db;
   border: 1px solid #196090;
   box-shadow: inset 0 0 1px 1px #8bc4ea;
 }
 
 .yellow {
   background-color: #f1c40f;
   border: 1px solid #927608;
   box-shadow: inset 0 0 1px 1px #f7dc6f;
 }
 
 .green {
   background-color: #2ecc71;
   border: 1px solid #1b7943;
   box-shadow: inset 0 0 1px 1px #7ee2a8;
 }
 
 .red {
   background-color: #e74c3c;
   border: 1px solid #a82315;
   box-shadow: inset 0 0 1px 1px #f29f97;
 }
 
 .grey {
   background-color: #95a5a6;
   border: 1px solid #617374;
   box-shadow: inset 0 0 1px 1px #ccd4d5;
 }
 
 .black {
   background-color: #34495e;
   border: 1px solid #10161c;
   box-shadow: inset 0 0 1px 1px #587ca0;
 }
 
 .purple {
   background-color: #9b59b6;
   border: 1px solid #623475;
   box-shadow: inset 0 0 1px 1px #c6a0d5;
 }
 
 .white {
   background-color: #ecf0f1;
   border: 1px solid #b1c2c6;
   box-shadow: inset 0 0 1px 1px white;
 }
 
 .orange {
   background-color: #e67e22;
   border: 1px solid #924d10;
   box-shadow: inset 0 0 1px 1px #f0b37e;
 }
 
 .turquoise {
   background-color: #1abc9c;
   border: 1px solid #0e6252;
   box-shadow: inset 0 0 1px 1px #55e7ca;
 }
 
 body {
   background-color: #222;
 }
 
 .event-counter {
   width: 202px;
   height: 20px;
   margin: 20px auto;
   font-size: 10px;
   text-align: center;
   color: #f0f0f0;
   opacity: 0;
 }
 
 .score,
 .level {
   position: fixed;
   left: 463px;
   z-index: 1;
   width: 202px;
   height: 40px;
   margin: 10px auto;
   font-size: 20px;
   text-align: center;
   font-family: Consolas, monaco, monospace;
   color: #f0f0f0;
 }
 
 .score {
   top: 150px;
   font-weight: bold;
 }
 .score:before {
   content: "score: ";
 }
 
 .level {
   top: 175px;
 }
 .level:before {
   content: "level: ";
 }
 
 .grid {
   width: 202px;
   height: 402px;
   position: fixed;
   top: 50px;
   left: 300px;
   border: 1px solid #bdbdbd;
   box-shadow: 0 0 200px 0 #000;
 }
 
 .preview-cells {
   width: 102px;
   height: 102px;
   position: fixed;
   top: 50px;
   left: 520px;
   border: 1px solid #bdbdbd;
 }
 
 .cell {
   width: 20px;
   height: 20px;
   display: inline-block;
   float: left;
 }