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The tech sector has an elephant in the room: we use too much energy. In 2024, the World Bank estimated the internet to account for 1-4% of global greenhouse emissions, similar to aviation. The good news is: there are documented and measurable opportunities to improve. From code to infrastructure. In this talk, we’ll look at best practices from the W3C’s new Web Sustainability Guidelines and beyond, focusing on lessons you can apply today.

You've probably build one of these before: tooltips, date pickers, menus, teaching UI… they're all examples of “popover” content. Good news: it's going to get a whole lot easier to build these, with some proposed web platform features. You might not even need JavaScript. In this talk, you’ll learn all about the upcoming ‘popover’ attribute, when to use modality and access to the top layer.

Our design systems commonly feature components that show on top of other content: tooltips, date pickers, menus and teaching UI, to name just a few. Proposed updates to the web platform are about to make building these a whole lot easier. You might not even need JavaScript. In this talk, you’ll learn all about the upcoming ‘popover’ attribute, modality and the top layer.