body {
  margin: 0;
  padding: 0;
  background-color: #202020;
  font-family: sans-serif;
}

.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

h1 {
  color: #fff;
}

#canvas {
  border: 1px solid #fff;
}

.input-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 20px;
}

input[type="number"] {
  padding: 10px;
  margin: 0 10px;
  font-size: 16px;
  border-radius: 4px;
  border: none;
  outline: none;
  width: 100px;
  text-align: center;
  background-color: #fff;
  color: #0099cc;
}

button {
  border: none;
  outline: none;
  cursor: pointer;
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 16px;
  font-weight: bold;
  margin: 0 10px;
  background-color: #0099cc;
  color: #fff;
  transition: all 0.2s ease;
}

button:hover {
  background-color: #fff;
  color: #0099cc;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

button:active {
  transform: scale(0.95);
}