Bootstrap uses some browser-specific selectors to provide progressive enhancements and reset some styles across browsers. These may not always pass CSS validators, but they still have a place in real world applications. These validation warnings don’t matter in practice as they don’t interfere with the proper functioning of our styles, and we deliberately ignore these particular warnings.
-Likewise, our HTML has some trivial and inconsequential HTML validation warnings. Some of these are also supressed by our own local configuration and can be ignored.
+Likewise, our HTML has some trivial and inconsequential HTML validation warnings. Some of these are also suppressed by our own local configuration and can be ignored.