.containersa {
      display: flex;
      flex-wrap: wrap;
      padding: 1rem;
      gap: 1rem;
       border: 1px solid #d1fae5;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.1);
    }
    .controls, .output {
      flex: 1 1 300px;
      background: #fff;
      padding: 1rem;
      border-radius: 8px;
    }
    
    label {
      display: block;
      margin-top: 1rem;
    }
    select, input[type="number"], button {
      width: 100%;
      padding: 0.5rem;
      margin-top: 0.5rem;
    }
  button {
  padding: 10px 20px;
  margin: 5px;
  font-size: 16px;
  cursor: pointer;
  border: none;
  border-radius: 5px;
  background-color: #007bff;
  color: white;
}

button:hover {
  background-color: #0056b3;
}
    .output-box {
      border: 1px solid #ccc;
      padding: 1rem;
      height: 300px;
      overflow-y: auto;
      white-space: pre-line;
      background: #fafafa;
    }
    .btn-group {
      display: flex;
      gap: 0.5rem;
      margin-top: 1rem;
    }
    .btn-group button {
      flex: 1;
    }