Fix: Firefox Border Radius Not Working

Firefox is definitely a winner when it comes to users’ personal preferences – just take a look at how it stands to Safari, Chrome, or Brave. There’s every reason to love this browser, from enhanced privacy to comprehensive dev tools. That said, it’s not flawless and cases of Firefox border radius not working are starting to pile up.

What is Moz border radius, you ask? Don’t worry, we’ll tell you all about it soon enough. Firefox even offers a Developer Edition for users familiar with programming and code. But while the border radius CSS property works fine for browsers like Chrome and Opera, it fails miserably in Firefox.

Thinking about cuttings corners? Well, if you prefer to simply ditch the troubleshooting boat now and go for a quicker solution, we don’t blame you. ➡️ You can choose to switch to Opera right now and enjoy all its customization options, including CSS-related.

However, if you’d like to keep going and see why won’t border radius work in Firefox, we’ve also got your back, so read on.

What is Moz border radius in CSS?

The border radius CSS property allows users to round element corners and customize them to their liking. It applies to the entire background and has up to four length or percentage values, one for each corner.

Users can adjust these values to get elliptical corners. In short, they can alter the percentage value to adjust the dimensions of the border box.

The border radius CSS is compatible with most, if not all browsers, including Google Chrome, Microsoft Edge, and Opera. And speaking of that, you are likely to encounter this issue in more than one place:

• CSS image border radius not working
• border-top-left-radius not working in Firefox
• Firefox border not showing
• border radius not working on Chrome, Edge, Safari, Outlook, React Native
• border radius not working on top, table, image

How can I fix border radius not working in Firefox?

1. Double-check the code

Double-check the code to make sure everything was entered properly, and the syntax is correct. Firefox’s developer page provides helpful references for CSS properties, including border radius code and syntax.

Users can easily copy and paste the code to make sure it’s exact.

If you have a -moz or -webkit prefix, then you may encounter errors with Firefox 13 and newer as the latest versions of browsers now use CSS3 syntax. If you are using prefixed code, also add code without the prefix.

Also, if the syntax is off then you will have issues, refer to Firefox’s syntax reference to double-check.

2. Check for Beta updates

If using the Beta version of Firefox, check for any Beta updates. Firefox Beta allows users to test out future versions of the browser and report any bugs or feedback.

Mozilla regularly releases notes for the beta on their website, so checking those may also provide a solution. Here users can see if there are any reported bugs or if there are any changes made.

3. Input individual values

Users report that Firefox does not return borderRadius the same as other browsers, which is why the code works in Chrome but not in Firefox.

Firefox does not support getPropertyValue on getComputedStyle of shorthand properties. Many users report needing to input a value for each corner of the element for the border radius to work in Firefox.

This is an ongoing issue, we know, but we hope our solutions proved useful. So if you have another suggestion on how to fix the Firefox border radius not working problem, let us know in the comments.