html, body {
  height: 100%;
  font-family: Arial, Helvetica, sans-serif;
  background-color: rgb(255, 252, 247);
}

input {
  width: 400px;
  height: 20px;
}

button {
  width: 50px;
  height: 25px;
}

canvas {
  background-color: white;
  border: 1px solid #d3d3d3;
}