Feature/20230215 julian

[Julian0701]

DEVELOP

• [x] Home Page
• [x] Contact us form
• [x] Why bolt
• [x] Usecase list
• [x] Usecase items

CHECK LIST

• Naming convention verification: checked
• Coding style verification: checked
• new Library: 0
• new Class / Component: 5
  • src/components/about/usecase_items.tsx
  • src/components/about/usecase_list.tsx
  • src/components/about/why_bolt.tsx
  • src/components/common/news_items.tsx
  • src/components/common/news_list.tsx
• new loop: 3
  • src/components/common/news_list.tsx line8 ~ line19
  • src/components/about/usecase_list.tsx line8 ~ line17
  • src/components/about/usecase_items.tsx line15 ~ line17
• new recursive: 0
• high risk: 0
• new sql: 0