.grid {
  position: absolute;
  width: 560px;
  height: 300px;
  border: solid black 1px;
}

.block {
  position: absolute;
  width: 100px;
  height: 20px;
  background-color: blue;
}

.user {
  position: absolute;
  width: 100px;
  height: 20px;
  background-color: purple;
}

.ball {
  width: 20px;
  height: 20px;
  border-radius: 10px;
  background-color: red;
  position: absolute;
}

.button {
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  background-color: #313bac;
  color: white;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.3s ease;
  margin: 0.5rem;
}