Blog
Tips for responsive design & developer tools
Page 4 of 10
CSS breakpoints used by popular CSS frameworks
When using a CSS framework it often doesn't matter what devices people use. These frameworks come with their own set of CSS breakpoints with components that work well with those breakpoints. Instead of configuring…
Offset parent and stacking context: positioning elements in all three dimensions
They are fundamental CSS concepts you use every single day whether you know it or not: the offset parent and stacking context . In this article we'll explore how you can use them to position elements in all three…
Polypane 14.1: Container query support, forced element state and contrast lines in color pickers
Container queries in the Polypane Elements panel, color pickers now show contrast lines, the ability to force pseudo states like hover or focus on elements, a new Cascade layer tree overview, new devices and better…
Polypane 14
Polypane 14 is here! In this release we added support for testing with multiple sessions, a new Elements Debug panel to quickly help you debug issues, an updated UI, new screenshot options, performance and UI…
ColorContrast.App: a new place for our color contrast checker
We first released our color contrast checker three years ago. At the time it was one of the first ones that gave suggestions , based on the needs I had while working on an open-source corona tracking app. Later on the…
Polypane 13.1
Polypane 13.1 is here! In this release we retooled our build system from webpack to Vite, which has improved the startup time and UI performance of Polypane by about 20%. 13.1 also adds network requests to the Console…
Polypane on PodRocket
On April 5th Kilian was a guest on the PodRocket podcast . Together with Paul Mikulskis we chatted about Polypane, developer experience, and more! Listen to it here Thanks PodRocket for having me on!
Using Polypane to check a website with James Q Quick
Together with James Q Quick Kilian showcased how Polypane can be used to find issues and suggest improvements on a live website. During the livestream Kilian and James went through his new portfolio site and checked…
Building a lightbox with the Dialog element
The dialog element lets you overlay content on top of your site in something called the "top layer", which is a special layer that sits above all other content. This way you never have to worry about your dialog being…
Polypane 13: CSS Nesting, extension support in beta, search by selector and Chromium 110
Polypane 13 is here! We're launching beta support for regular browser extensions, have a new way to search for elements and have added support for CSS Nesting in the elements inspector. Polypane 13 also runs on Chromium…
Polypane on Syntax.fm
On December the 30th Kilian was a guest on the Syntax.fm Supper Club to talk about Polypane. Wes, Scott and Kilian spoke about Kilians background, how he came up with Polypane, how it's built and how different features…
:where() :is() :has()? New CSS selectors that make your life easier
When people talk about CSS complexity, a major contributor to that is CSS specificity, or writing effective CSS selectors. The more you add to a CSS selector, the more precise it is, but also, the more specific it is, so…