Comprehensive A3 Word Template Development

I am writing a techincal material, i want a template for Word file A3 size and black background,
THE 25 MASTER CATEGORIES
1. DEFINITIONS
2. Types/Categories
3. FORMULAS and applicability(mathematical, relations, chemical formulas)
4. THEORY & THEOREMS( Derived from, principle,)
5. Assumptions, limitations
6. LAB EXPERIMENTS (apparatus, applicability, procedure, )
7. INSTRUMENTS/EQUIPMENTS
8. GRAPHS
9. PICTURES
10. UNITS
11. Methods/ Techniques/treatments
12. Cases
13. IMPORTANT DATA (Values, Tables, ranges, IS code , Acronyms)
14. Best(optimum, most useful, economical)
15. Other names
16. STANDARD PROBLEMS
17. Comparisions
18. Concept- Reason
19. Purpose
20. Sequences( operating procedure, construction order, manufacturing, asceneding and descending orders)
21. Derivations
22. Principles and mechanism
23. Examples of any theory or concept
24. Shortcuts/ solving techniques
25. Standard questions
These are 25 category data i want to maintain, i want 25 word template format for my materials