Project: styled-components
Task (challenging): 1) Create components/Markdown.tsx, support Markdown Parse and render for blog content in ReadBlogs.tsx 2) Use styled-components to set the text color of elements in Markdown: h1 #000000, h2 #333333, h3 #666666, h4 #999999 3) Constraint: DO NOT use any third-party packages; ONLY React and styled-components are allowed.