body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f9;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  font-family: "Courier New", Courier, monospace;
}

.container {
  display: flex;
  justify-content: space-between;
  width: 80%;
}

.input-section,
.result-section {
  width: 45%;
  padding: 20px;
  margin: 5px;
  background-color: #ffffff;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h2 {
  text-align: center;
}

label {
  margin-top: 10px;
  display: block;
}

input {
  width: 95%;
  padding: 8px;
  margin: 5px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: "Courier New", Courier, monospace;
}

button {
  width: 48%;
  padding: 10px;
  margin-top: 20px;
  background-color: #4caf50;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #45a049;
}

pre {
  background-color: #f2f2f2;
  padding: 10px;
  border-radius: 5px;
  white-space: pre-wrap;
  word-wrap: break-word;
}

#matrix-table table,
#lower_triangular > table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

#matrix-table td,
#matrix-table th,
#lower_triangular td,
#lower_triangular th {
  padding: 8px;
  border: 1px solid #ddd;
  text-align: center;
}