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10 Cool CodePen Demos (June 2026)
Sand bottle - WebGPU Remember those bottles filled with colored sand that you can find in many souvenir stores? Liam Egan created a digital version using JavaScript WebGPU API. Click to drop sand, use the arrows to tilt and shake the bottles, and relax while enjoying this sandy demo. Button State Builder Margarita shared this button builder that allows to customize a control with icons, text, color, shape... even all the behavior in the different states of the button. Then you can easily get the HTML, CSS, and JS code to put it on any website. Pretty cool. WebGL Switch Button In this demo, the whole page turns into a giant three-dimensional toggle switch that can be activated clicking anywhere on the viewport. Explore the component: mouse over to make the component tilt or scroll to zoom in and out. A nice job by Toc. Animated radial gradient mask over text This demo is exactly what the title says: a radial gradient applied as a mask to some text. Cassidy aligned it perfectly with the hole in the O from "Hello" that makes this effect chef's kiss . You will need to uncomment the animation property in CSS to see the demo in action. 221. ycw always creates impressive and original content. And this demo delivers. It's not only the effect in itself, but the use of light and shadows, and the perfecto choice of color that adds a timeless atmosphere. Beautiful. vRLbdoSAIsoSQvisac Mustafa Enes created different versions of this idea over the past month, all of them are great, but I picked this one as it is more interactive. Click on the screen to regenerate the pattern and move the mouse around to animate the colors. I don't know why, but there's a feeling of peace and joy while doing it. beach sunset I saw several demos by Vivi Tseng that caught my attention this month. Really enjoyed the general minimalistic style they all had and finally picked this animated one because it feels simple and pure, almost like a drawing a child would do during a vacation. I really enjoyed it
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Early in building our cloud infrastructure, we had a problem nobody talks about — because it happens so slowly you almost don't notice it. We had eight separate Helm charts. One for services that needed KEDA scaling. One for standard HPA. One for backends that exposed HTTP. One for workers that didn't. One for Azure Functions. One for frontends. Eight charts, all living in the same repository, all drifting apart from each other. The charts started as copies of each other. Over time each one picked up its own fixes, its own conventions, its own slightly-different take on security contexts and ServiceAccount annotations and rolling update strategy. Nobody made a decision to diverge. It just happened. Every time we fixed something in one chart — say, wiring up Azure Workload Identity to every ServiceAccount — we had to remember to propagate that fix to seven others. Sometimes we did. Sometimes we didn't. We'd find out when something broke in an unexpected way six weeks later. Helm chart drift is more dangerous than dependency drift. At least with a dependency, you know what version you're on. With eight loosely related charts, you just don't know what you don't know. This is the story of how we replaced all eight with a single versioned chart, published to an OCI registry, and consumed by 70+ services through ArgoCD multi-source Applications — and what that structure forced us to think clearly about. The Two-Questions Framework The first thing we had to do was figure out why we had eight charts in the first place. What was actually different between services that justified a different chart? We landed on two questions: Does it expose HTTP? — This determines whether it needs an ingress, a Service, liveness/readiness probes on an HTTP path. What drives its scaling? — Standard CPU/memory HPA, or event-driven scaling via KEDA (Azure Service Bus, Event Hubs)? That's it. Everything else — security contexts, Workload Identity, pod anti-affinity, rolling update strategy, how s
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Baking sourdough bread is inherently old-fashioned, relying on natural fermentation and wild yeast instead of the simple, predictable commercial stuff. So it might sound anathema to bring a gadget into the mix. The trick to the Sourdough Sidekick - backed and branded by King Arthur flour - is that it promises to automate the boring […]
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How Keurig saved — and ruined — your coffee
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