Not possible to use CSS calc() with transform: translateX in IE

html

responsive-design

css

performance

byAlex Kataev·Aug 29, 2024

To sidestep the calc() limitations with transform: translateX in IE, use JavaScript for your calculations:

// Dynamic calculation (IE-friendly, kind of like your grandma's cookie recipe)
var translateValue = window.innerWidth / 2 - 50; // Don't forget to adjust to your specific needs 

// Apply that sweet, sweet transform directly
document.getElementById('element').style.transform = 'translateX(' + translateValue + 'px)';

This approach circumvents the use of calc(), resulting in transformations that even IE finds friendly.

Cross-Browser Harmony

When dealing with CSS, it's good to juggle a few strategies for maximum compatibility. You might consider using a combination of translateX values as an effective alternative to calc():

.element {
  transform: translateX(100%) translateX(-50px); // Stack 'em up!
}

In essence, stacking translateX results in smooth transitions and is more future-proof.

Smooth and Reliable: Testing

It's not unknown that IE10/11 can be a bit quirky. So, it's a good idea to validate your code on these versions to ensure smooth animations. If translateX isn't working as expected, perhaps left might save the day:

.element {
  position: relative;
  left: 50%;  // Half-way there...
  margin-left: -50px;  // ...And a little bit back.
}

Keep in mind that using left for animations can sometimes be choppier than using transform.

Future-proofing your code

Supporting IE-specific prefixes never hurts:

.element {
  -ms-transform: translateX(100%) translateX(-50px); // For our lovely IE users
  transform: translateX(100%) translateX(-50px);
}

Also, keep an eye on the performance across all browsers. Doing so will ensure your animations run as smoothly as a buttered otter.

Progressive Enhancement

Consider CSS Feature Queries to provide a baseline experience on IE while pushing the boat out on other browsers:

.element {
  transform: translateX(100%) translateX(-50px); 

  @supports (transform: translateX(calc(100% - 50px))) {
    transform: translateX(calc(100% - 50px)); // Fancy pants for other browsers
  }
}