On day 9, Vue 3, SvelteKit, and Angular showcase dynamic CSS Class and Style binding.Vue 3 and SvelteKit demo dynamic CSS Class Binding to list items using arrays or Objects.Vue 3 toggles strikeout class on purchase and applies priority class on high priority.SvelteKit warns against clickable and uses a button for toggling purchased property.Angular 19 introduces @let syntax for creating temporary variables in templates.Angular binds CSS classes using [class] syntax, merging classes based on properties.Vue 3, SvelteKit, and Angular demonstrate dynamic Style Binding for high priority checkboxes.Vue 3 uses inline style binding for changing font-weight based on checkbox status.SvelteKit uses style:property binding to apply CSS values to inline style based on checkbox status.Angular binds the font-weight style using [style.property] syntax, converting camel case in CSS.Resources provide documentation on class and style bindings in Vue, Svelte, and Angular.Github repositories and pages showcase Vue 3, Angular, and Svelte code implementations.The article demonstrates practical examples of dynamic CSS and style bindings in modern frontend frameworks.