Build a Search Bar with HTML/CSS (No Framework)

Task: Build a Search Bar UI Using Only HTML + CSS (No Frameworks) Implement a search bar UI using only HTML and CSS (no frameworks or component libraries). Functional & structural requirements The page must contain a search bar area with at least: a text input (<input type="text">) a clickable search button (<button>) The input must have a placeholder, e.g. Search.... Basic usability: the input can be focused and typed into the button is clickable Styling requirements (use any reasonable approach) The search bar should look like a cohesive component (input and button aligned, borders connect naturally). Provide a :focus style for the input (e.g., border or shadow change). The component should not break badly at different widths (at minimum, input and button should not overlap). Constraints No backend/data involved. Only HTML + CSS (may be in a single file). Submit The content of index.html (including necessary CSS).