* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: "Courier New", Courier, monospace;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
.grid {
  width: 400px;
  height: 600px;
  background: yellow;
  position: relative;
  font-size: 200px;
  text-align: center;
}
.doodler {
  width: 60px;
  height: 85px;
  background: red;
  position: absolute;
}
.platform {
  width: 85px;
  height: 15px;
  background: green;
  position: absolute;
}