If your transforms destroy the readability of your site on browsers that do not support them, use Modernizr's
no-csstransforms class to adjust the design so that the text remains readable. In the unlikely event of you needing a polyfill for unsupported browsers, use Transformie or CSSSandpaper.
If you need full support, you will need to include some prefixes:
-webkit- for Safari and
-ms- for IE9.