* {
  margin: 0;
  padding: 0;
  list-style: none; }

.shade {
  position: fixed;
  background: #01aa35;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;
  z-index: 200;
  transition: transform 1s ease; }
  .shade.active {
    transform: scale(0, 0); }
  .shade h1 {
    width: 100%;
    height: 300px;
    position: absolute;
    left: 0;
    right: 0;
    margin: 0 auto;
    top: 20px;
    line-height: 300px;
    text-align: center;
    color: white;
    transition: 2s;
    font-size: 60px; }
    .shade h1.active {
      text-shadow: 0 0 .1em, 0 0 .3em; }
  .shade .start {
    width: 350px;
    height: 200px;
    background: url(12.png) no-repeat center center;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto; }
  .shade .snake {
    width: 350px;
    height: 200px;
    background: url(13.png) no-repeat center center;
    position: absolute;
    left: 0;
    right: 0;
    margin: 0 auto;
    bottom: 50px;
    transform: translate3d(-500px, 0, 0);
    animation: move 5s ease 0s infinite both; }

@keyframes move {
  0% {
    transform: translate3d(-500px, 0, 0); }
  50% {
    transform: translate3d(200px, 0, 0); }
  100% {
    transform: translate3d(1000px, 0, 0); } }

.box {
  position: absolute;
  background: #01aa35;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto; }
  .box .over {
    width: 400px;
    height: 200px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 4px;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    z-index: 1000;
    text-align: center;
    line-height: 200px;
    font-size: 50px;
    color: white;
    text-shadow: 0 1px #d9d9d9, 0 2px #cccccc, 0 3px #bfbfbf, 0 4px #b3b3b3, 0 5px #a6a6a6;
    transform: scale(0, 0);
    transition: transform .8s ease; }
    .box .over.active {
      transform: scale(1, 1); }
    .box .over span {
      display: block;
      width: 100px;
      height: 40px;
      position: absolute;
      left: 0;
      right: 0;
      margin: 0 auto;
      bottom: 10px;
      border-radius: 8px;
      font-size: 24px;
      line-height: 40px;
      background: rgba(255, 255, 0, 0.3);
      color: #ffc;
      text-shadow: 0 0 .1em, 0 0 .3em;
      cursor: pointer; }

.box .btn1 {
  width: 200px;
  height: 80px;
  border-radius: 8px;
  background: url(14.png) no-repeat center center/auto 80px;
  cursor: pointer;
  position: absolute;
  left: 50%;
  bottom: 180px;
  margin-left: 350px;
  transition: transform .3s ease; }
  .box .btn1.active {
    tranform: scale(1.2, 1.2); }

.btn2 {
  width: 200px;
  height: 80px;
  border-radius: 8px;
  background: url(15.png) no-repeat center center/auto 80px;
  cursor: pointer;
  position: absolute;
  left: 50%;
  bottom: 100px;
  margin-left: 350px;
  transition: transform .3s ease; }
  .btn2.active {
    tranform: scale(1.2, 1.2); }

.inner {
  width: 600px;
  height: 600px;
  /*border: 1px solid red;*/
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;
  background: url(1.png); }
  .inner .bk1 {
    width: 100%;
    height: 70px;
    position: absolute;
    bottom: -40px;
    left: 0;
    background: url(22.png) no-repeat center top; }

.block {
  width: 30px;
  height: 30px;
  float: left; }

.she {
  background: url(5.png); }

.she1 {
  background: url(4.png); }

.food {
  width: 30px;
  height: 30px;
  float: left;
  background: url(6.png); }

.mark {
  width: 300px;
  height: 200px;
  background: url(33.png) no-repeat center center;
  position: absolute;
  top: 0;
  left: 50%;
  margin-left: 300px;
  text-align: center;
  line-height: 200px;
  color: #fff;
  font-size: 40px; }

.box1 {
  position: absolute;
  top: 100px;
  left: 50%;
  margin-left: -650px;
  width: 300px;
  height: 500px;
  padding-left: 80px;
  padding-top: 80px;
  box-sizing: border-box;
  font-size: 16px;
  color: #fff;
  line-height: 2em;
  text-align: left;
  box-shadow: 0 0 0 5px rgba(0, 255, 0, 0.5); }
  .box1 h1 {
    width: 100%;
    height: 80px;
    line-height: 80px;
    text-align: left; }