* {
  box-sizing: border-box;
}

.heading{
  display: flex;
  align-items: center;
  flex-direction: column;
}
button {
  margin-bottom: 4px;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  background-color: #007BFF; 
  color: white;
  border: none;
  border-radius: 5px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease, transform 0.2s ease;
  font-weight: bold;
}

button:hover {
  background-color: #0056b3; 
}

button:active {
  transform: scale(0.98);
}
#container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: calc(95vh - 7.5rem); 
  width: 100%;
}

.row {
  display: flex;
  flex: 1 1 100%;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.pixel {
  flex: 1 1 100%;
  height: 100%;
}