The CSS Overflow Module Level 5 specification introduces new features for creating carousel UI patterns with scroll buttons and scroll markers.These features have been prototyped in Chrome 135 and discussed by developers like Adam Argyle and Kevin Powell.To set up a simple carousel in CSS, you can use grid properties like grid-auto-flow, grid-auto-columns, and gap.By incorporating CSS Scroll Snapping, you can ensure smooth transitions between carousel items.Adding scroll buttons to the carousel allows users to navigate left and right by 85% of the area.CSS pseudo-elements like ::scroll-button(left) and ::scroll-button(right) help style and control the behavior of the buttons.Scroll markers, indicated by dots below the content, can be utilized to directly scroll to specific items within the carousel.Styling scroll markers and handling their interactions, such as hover and focus, enhances the visual and interactive aspects of the carousel.Animations like scroll-behavior: smooth can be applied to improve scrolling effects, with considerations for user motion preferences.CSS Carousels are currently supported in Chrome 135+ as an experimental feature, offering enhanced user experience and accessibility benefits.