i have developed site in one machine (www.example.com). i moved all setup to another machine (www.example1.com).after moving some problem is there.some css files like "css__48K1J5D3tG5zmBfajwIKY-4DGflacHFmJ6qlkBqjtPw__hdw......css" under advagg_css folder refering old site url.
I think your site is trying to reference CSS that was held in your 'files' folder that may not now exist.
If you navigate to configuration > Performance
and untick 'Aggregate and compress CSS files'
Now check your site and see if it works. If it does you should be able to reenable the compression and hopefully your site will work fine.