@import url(fonts/clear-sans.css);
html, body {
  margin: 0;
  padding: 0;
  background: #faf8ef;
  color: #776e65;
  font-family: "Clear Sans", "Helvetica Neue", Arial, sans-serif;
  font-size: 18px; }

body {
  margin: 80px 0; }

h1 {
  font-size: 80px;
  font-weight: bold;
  margin: 0; }

p {
  margin-top: 0;
  margin-bottom: 10px;
  line-height: 1.65; }

a {
  color: #776e65;
  font-weight: bold;
  text-decoration: underline; }

strong.important {
  text-transform: uppercase; }

hr {
  border: none;
  border-bottom: 1px solid #d8d4d0;
  margin-top: 20px;
  margin-bottom: 30px; }

.container {
  width: 500px;
  margin: 0 auto; }

.game-container {
  margin-top: 40px;
  position: relative;
  padding: 15px;
  cursor: default;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  background: #bbada0;
  border-radius: 6px;
  width: 500px;
  height: 500px;
  box-sizing: border-box; }

.grid-container {
  position: absolute;
  z-index: 1; }

.grid-row {
  margin-bottom: 15px; }
  .grid-row:last-child {
    margin-bottom: 0; }
  .grid-row:after {
    content: "";
    display: block;
    clear: both; }

.grid-cell {
  width: 106.25px;
  height: 106.25px;
  margin-right: 15px;
  float: left;
  border-radius: 3px;
  background: rgba(238, 228, 218, 0.35); }
  .grid-cell:last-child {
    margin-right: 0; }

.tile-container {
  position: absolute;
  z-index: 2; }

.tile {
  background: red;
  width: 106.25px;
  height: 106.25px;
  border-radius: 3px;
  background: #eee4da;
  text-align: center;
  line-height: 116.25px;
  font-size: 55px;
  font-weight: bold;
  -webkit-transition: 200ms ease;
  -moz-transition: 200ms ease;
  -webkit-transition-property: top, left;
  -moz-transition-property: top, left; }
  .tile.tile-position-1-1 {
    position: absolute;
    left: 0px;
    top: 0px; }
  .tile.tile-position-1-2 {
    position: absolute;
    left: 0px;
    top: 121.25px; }
  .tile.tile-position-1-3 {
    position: absolute;
    left: 0px;
    top: 242.5px; }
  .tile.tile-position-1-4 {
    position: absolute;
    left: 0px;
    top: 363.75px; }
  .tile.tile-position-2-1 {
    position: absolute;
    left: 121.25px;
    top: 0px; }
  .tile.tile-position-2-2 {
    position: absolute;
    left: 121.25px;
    top: 121.25px; }
  .tile.tile-position-2-3 {
    position: absolute;
    left: 121.25px;
    top: 242.5px; }
  .tile.tile-position-2-4 {
    position: absolute;
    left: 121.25px;
    top: 363.75px; }
  .tile.tile-position-3-1 {
    position: absolute;
    left: 242.5px;
    top: 0px; }
  .tile.tile-position-3-2 {
    position: absolute;
    left: 242.5px;
    top: 121.25px; }
  .tile.tile-position-3-3 {
    position: absolute;
    left: 242.5px;
    top: 242.5px; }
  .tile.tile-position-3-4 {
    position: absolute;
    left: 242.5px;
    top: 363.75px; }
  .tile.tile-position-4-1 {
    position: absolute;
    left: 363.75px;
    top: 0px; }
  .tile.tile-position-4-2 {
    position: absolute;
    left: 363.75px;
    top: 121.25px; }
  .tile.tile-position-4-3 {
    position: absolute;
    left: 363.75px;
    top: 242.5px; }
  .tile.tile-position-4-4 {
    position: absolute;
    left: 363.75px;
    top: 363.75px; }
  .tile.tile-2 {
    background: #eee4da;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0); }
  .tile.tile-4 {
    background: #ede0c8;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0); }
  .tile.tile-8 {
    color: #f9f6f2;
    background: #f2b179;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0); }
  .tile.tile-16 {
    color: #f9f6f2;
    background: #f59563;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0); }
  .tile.tile-32 {
    color: #f9f6f2;
    background: #f67c5f;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.07937), inset 0 0 0 1px rgba(255, 255, 255, 0.04762); }
  .tile.tile-64 {
    color: #f9f6f2;
    background: #f65e3b;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.15873), inset 0 0 0 1px rgba(255, 255, 255, 0.09524); }
  .tile.tile-128 {
    color: #f9f6f2;
    background: #edcf72;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.2381), inset 0 0 0 1px rgba(255, 255, 255, 0.14286);
    font-size: 45px; }
  .tile.tile-256 {
    color: #f9f6f2;
    background: #edcc61;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.31746), inset 0 0 0 1px rgba(255, 255, 255, 0.19048);
    font-size: 45px; }
  .tile.tile-512 {
    color: #f9f6f2;
    background: #edc850;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.39683), inset 0 0 0 1px rgba(255, 255, 255, 0.2381);
    font-size: 45px; }
  .tile.tile-1024 {
    color: #f9f6f2;
    background: #edc53f;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.47619), inset 0 0 0 1px rgba(255, 255, 255, 0.28571);
    font-size: 35px; }
  .tile.tile-2048 {
    color: #f9f6f2;
    background: #edc22e;
    box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.55556), inset 0 0 0 1px rgba(255, 255, 255, 0.33333);
    font-size: 35px; }

.game-intro {
  margin-bottom: 0; }

.game-explanation {
  margin-top: 50px; }