criado os widgets dropdown_button_default.dart, subtitle_containers.dart, alert_dialog_default.dart e title_containers.dart.

e ajustada a tela main_procedures_screen.dart

lib/widgets/subtitle_containers.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+import 'package:rkm/utils/color_palette.dart';
+import 'package:rkm/widgets/text_default.dart';
+
+class SubtitleContainers extends StatelessWidget {
+  String title;
+  double width;
+
+  SubtitleContainers({
+    required this.title,
+    this.width = double.infinity
+});
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Container(
+          padding: EdgeInsets.all(10),
+          width: width,
+          color: ColorPalette.white,
+          child: TextDefault(text: title,color: ColorPalette.black54),
+        ),
+        Divider(color: Colors.black54,endIndent: 10,indent: 10,)
+      ],
+    );
+  }
+}