Ask HN: Browser specific CSS Or X-browser compliant design?

Do you guys write - browser specific CSS? Or - make your design cross-browser compliant?

Today, I am quite please to note that FF adoption has reached equal percentage as of IE6+7+8. See the link below. Can we safely ignore retrofitting the app to IE6? I am just trying to weigh the ROI of effort.

  • You might also want to consider whether today's "browser specific" will be tomorrow's browser-specific. For example: there was no Google Chrome a year ago. Nor Safari for Windows.

    But be ready to add style sheets for mobile devices. ...or whatever evolves next.