This example presents an interactive login and registration form built with HTML and CSS, featuring a toggle between two views. The interface uses a hidden checkbox (`#check`) to switch between the login and signup forms, with CSS transitions on the submit buttons for hover feedback. The design is styled with the Poppins font from Google Fonts, and the form inputs are purely presentational, with no backend or validation logic. The implementation relies on vanilla JavaScript only for the checkbox interaction, while the visual styling and layout are handled entirely through the included stylesheet.