The topic of Responsive Toolbars and Navbars – Done Right! is currently the subject of lively debate — readers and analysts are keeping a close eye on developments.
This is taking place in a dynamic environment: companies’ decisions and competitors’ reactions can quickly change the picture.
Posted on Apr 29
• Originally published at overflowguard.dev
Responsive design is basically solved nowadays, right? We’ve been doing media queries for over a decade, we have @container queries now, and we have cool tricks like CSS Grid’s repeat(auto-fit, minmax()).
All this works pretty well, especially when things are static. But if you are dealing with dynamic content, things can still get less than perfect 😅. It’s especially easy to trip over toolbars, even for the pros:
This happens because you can’t really solve this when there is dynamic content using pure CSS, where you have to rely on fixed pixel breakpoints.
To solve it correctly and robustly, you’re gonna need some JS, or smart tools 🤓
The way to fix all of those is to detect when those navbars overflow. It’s actually not that difficult, and a competent AI agent can whip up some HTML+JS or React code.
And you can stop here and call it a day, I guess 🤷♂️. But we can make this even easier by using a smart tool: OverflowGuard.
It does exactly what it says on the tin 🏷️: it detects overflow and lets you swap in alternative styles or content.
It has two flavors:
Navbars are just the most common example. Other use cases you might easily find:
That’s a useful way to keep a toolbar compact when horizontal space gets tight. Toolbars with buttons are notoriously dynamic (translations, permissions, other context), so it’s sometimes impossible to find good hard-coded breakpoints.
Check out a HTML example, and a React example
Let’s not limit ourselves to the horizontal. OverflowGuard works perfectly well in the vertical ↕️ direction. Here’s something you might want to do: set a max height on a box and show a “read more” button if the content inside overflows.
Again, this is easily doable in HTML or React.
Leaving the best for last: a robust pattern for dynamic navbars called “greedy nav”, which you can find, for example, on another Google page that actually works correctly 😉.
You can nest OverflowGuard, so it’s quite easy to use it to build a greedy nav, especially in React.
It’s doable in raw HTML too, if you’re OK with all the extra nesting 😅 (still accessible, notably), or by adding some extra JS.
Once you have OverflowGuard in your toolbag, I am sure it will unlock some cool tricks 🪄 you never thought could be so easy to implement. Also mention it to your designers 🎨. They often work in fixed breakpoints 🙄, but with this capability they can lean into more fluid and content-driven design.
If you want your AI agent to know how to use the library, install the package-specific skill too:
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