* {
    margin: 0;
    padding: 0;
    font-family: 'Press Start 2P', cursive;
    user-select: none;
  }
  body, html {
    width: 100%;
    height: 100%;
    background: #1d1d1d;
  }
  #container {
    height: 500px;
    width: 1000px;
    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: url("https://i.postimg.cc/9Q1rrwfP/flappy-bird-background-png-6.png"), url("https://i.postimg.cc/9Q1rrwfP/flappy-bird-background-png-6.png"), url("https://i.postimg.cc/9Q1rrwfP/flappy-bird-background-png-6.png");
    background-size: 100% 100%;
    background-position: -800px 0, 0 0, 800px 0;
    overflow: hidden;
  }
  #barrier-container {
    height: 100%;
    width: 100%;
  }
  #barrier-container .barrier-top,
  #barrier-container .barrier-bottom {
    background: url("https://i.postimg.cc/QMXDcS6B/flappy-barrier-top-small.png"), url("https://i.postimg.cc/W4fyt7xc/flappy-barrier-small.png");
    width: 24px;
    position: absolute;
    background-repeat: no-repeat, repeat;
  }
  #barrier-container .barrier-top {
    top: 0;
    background-position: bottom, bottom;
  }
  #barrier-container .barrier-bottom {
    bottom: 0;
  }
  #barrier-container .barrier-top.hit,
  #barrier-container .barrier-bottom.hit {
      background-image: url("https://i.postimg.cc/4N6mz9mH/flappy-barrier-top-small-red.png"), url("https://i.postimg.cc/DykSJgyK/flappy-barrier-small-red.png");
  }
  #bird {
    height: 24px;
    width: 30px;
    position: absolute;
    left: 20%;
    top: 250px;
    transform: translateY(-50%);
    background: url("https://i.postimg.cc/JzgjSPmk/flappy-bird.png");
    z-index: 10;
    display: none;
  }
  #container>p {
    display: none;
  }
  #start_page {
    height: 100%;
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
  }
  #start_button {
    height: 92px;
    width: 162px;
    background: url("https://i.postimg.cc/PrB4D6Md/flappy-start.png");
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
  }
  #start_page>p {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 30px;
    display: none;
    user-select: none;
  }
  #restart {
    padding: 5px;
    text-align: right;
    cursor: pointer;
    display: none;
  }
  #controls {
    text-align: center;
    position: absolute;
    top: 310px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 25px;
    white-space: nowrap;
    cursor: pointer;
    line-height: 40px;
  }
  .score_wrap {
    position: absolute;
    left: 0;
    right: 0;
    z-index: 10;
    user-select: none;
    padding: 5px;
  }