Project: mobx
Task (easy): 1) Create components/Header.tsx that displays 'Hello Blog' at the top of the page with appealing background color.
2) Create components/Main.tsx where content is aligned at the top left and fills the remaining space. 
3) Develop components/Blog.tsx that accepts 'title' and 'detail' as props. Display mock blog data in Main.tsx using this Blog component with the mock data: { title: 'Morning', detail: 'Morning My Friends' }.
3) Render Header.tsx And Main.tsx in App.tsx 
4) The classname of title in Blog.tsx is 'blog-title', the width of blog-title is 'fit-content', fontSize is 24px