body {
  font-family: Arial, sans-serif;
  background: #1e1e1e;
  color: white;
  text-align: center;
  margin: 0;
  padding: 20px;
}

h1 {
  margin-bottom: 20px;
}

.controls {
  margin-bottom: 20px;
}

button {
  background: #2196f3;
  border: none;
  color: white;
  padding: 10px 20px;
  margin: 5px;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background: #0d47a1;
}

#maze {
  justify-content: center;
  align-content: center;  
  display: grid;
  margin: 0 auto;
  grid-template-columns: repeat(20, 25px);
  grid-gap: 1px;
}

.cell {
  width: 25px;
  height: 25px;
  background: #333;
  border-radius: 3px;
  transition: background 0.2s;
}

.wall { background: #111; }
.start { background: #4caf50; }
.end { background: #f44336; }
.visited { background: #2196f3; }
.path { background: yellow; }