lets ma a page that has a title "The Chunk Visualizer" as an h1. Below that I want a big text field that people can post text into. It should be a square that takes up 40% of the width of the screen. below that aligned with the text field there should be 3 dropdowns 1. Framework (with 2 choices Langchain and LlamaIndex) 2. Text Splitter 3. Colors | A shadcn/ui and v0 generation - v0
