Is Bootstrap 4.0.0 not compliant with W3C standards?

I'm struggling with an issue in my application where I am attempting to minimize all of my .css files.

It appears that Bootstrap is not passing W3C validation, both in the regular and .min versions.

Any insights on how to resolve this issue?

Answer №1

Bootstrap's documentation addresses the issue. They have implemented some clever techniques to work around browser bugs and utilize new CSS features that may not yet be supported by validators.

Despite these strategies, the bulk of their CSS code remains valid.

To cater to outdated and buggy browsers, Bootstrap employs CSS browser hacks in specific instances to apply targeted styles for different browser versions to circumvent inherent bugs in those browsers. Although these hacks can trigger CSS validation errors, they are necessary for ensuring proper functionality across various browsers. Additionally, we incorporate cutting-edge CSS features that are still in experimental stages but serve as enhancements for modern browsers.

In reality, these validation warnings are inconsequential because the main portion of our CSS complies with standards and any hacky elements do not disrupt the overall performance of our code. This is why we choose to overlook these particular warnings deliberately.

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