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lib/view/widget/input_field.dart

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+import 'package:flutter/material.dart';
+
+Widget buildInput(BuildContext context, TextEditingController controller,
+    {int maxLines = 20, String? hint}) {
+  return Card(
+    child: TextField(
+      maxLines: maxLines,
+      decoration: InputDecoration(
+          fillColor: Theme.of(context).cardColor,
+          hintText: hint,
+          filled: true,
+          border: InputBorder.none),
+      controller: controller,
+    ),
+  );
+}