── Label Info ───────────────
You can do it easily with a Row — just make the left line short and the right one expanded.

Row(
  children: const [
    // Short left line
    SizedBox(
      width: 20,
      child: Divider(thickness: 1),
    ),

    SizedBox(width: 8),

    // Label text
    Text(
      'Label Info',
      style: TextStyle(fontWeight: FontWeight.bold),
    ),

    SizedBox(width: 8),

    // Long right line
    Expanded(
      child: Divider(thickness: 1),
    ),
  ],
),