End of CSS expressions

According to the official IE developer blog , CSS expressions support, by many disputed decision, will be disabled by default in the eighth version. Among the reasons cited are safety and high costs in terms of performance.

However, support for CSS expressions will remain in compatibility mode with the seventh version of the browser, to support existing projects.

Thus, Microsoft, it seems, once again demonstrates its desire to adhere to the recommendations and standards in the implementation of the new version of the browser.