#practice, .matrix-container {
  width: 95%;
  max-width: 600px;
  text-align:left;
  margin-bottom: 20px;
}


input[type="number"], input[type="text"] {
  padding: 6px;
  width: 150px;
  margin: 5px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

button {
  margin: 10px 5px;
  padding: 8px 16px;
  border: none;
  border-radius: 5px;
  background-color: #3b82f6;
  color: white;
  cursor: pointer;
  font-weight: bold;
}

.button-practice{
  text-align: center;
}

button:hover {
  background-color: #2563eb;
}

.hidden {
  display: none;
}

.matrix-container {
  padding: 20px;
  border-radius: 10px;
  background-color: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  margin-top: 20px;
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(3,50px);
  gap: 10px;
  justify-content: center;
  margin: 20px 0;
  

}

.cell {
  width: 50px;
  height: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: bold;
  border-radius: 6px;
  background-color: #e5e7eb;
  font-size: 16px;
  color: #111827;
}

.cell.filled {
  background-color: #93c5fd;
}

.message {
  color: green;
  font-weight: bold;
  margin-top: 10px;
}

.explanation {
  font-size: 14px;
  color: #1d4ed8;
  margin-top: 10px;
}