Learn how to create auto-closing notifications using HTML popover attributes combined with CSS transitions and JavaScript ResizeObserver. The technique uses CSS height transitions with @starting-style and transition-delay to visually hide the popover, while ResizeObserver detects when the animation completes to properly close

Table of contents
Let’s start with the popoverHiding the popover with a CSS transitionClosing the popover with JavaScriptSetting an HTML fallbackWhen to use this method?Sort: