* {
  padding: 0;
  margin: 0;
  border: 0;
}

*, *:before, *:after {
  box-sizing: border-box;
}

:focus, :active {
  outline: none;
}

a:focus, a:active {
  outline: none;
}

nav, footer, header, aside {
  display: block;
}

html, body {
  height: 100%;
  width: 100%;
  font-size: 100%;
  line-height: 1;
  font-size: 14px;
  -ms-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

input, button, textarea {
  font-family: inherit;
}

input::ms-clear {
  display: none;
}

button {
  cursor: pointer;
}

button::-moz-focus-inner {
  padding: 0;
  border: 0;
}

a, a:visited {
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

ul li {
  list-style: none;
}

img {
  vertical-align: top;
}

body {
  background: white;
}

#game {
  width: 400px;
  height: 500px;
  border: 1px solid #181818;
  margin: auto;
  overflow: hidden;
}

#block {
  width: 50px;
  height: 500px;
  background-color: black;
  position: relative;
  left: 400px;
  animation: block 2s infinite linear;
}

@keyframes block {
  0% {
    left: 400px;
  }
  100% {
    left: -50px;
  }
}
#hole {
  width: 50px;
  height: 150px;
  background-color: white;
  position: relative;
  left: 400px;
  top: -500px;
  animation: block 2s infinite linear;
}

#character {
  width: 20px;
  height: 20px;
  background-color: red;
  position: absolute;
  top: 100px;
  border-radius: 50%;
}