adjust announcement style
Styles tweak
Merge pull request #86 from xiaomengli/master

adjust announcement style
Merge pull request #87 from windyarts/style-tweak

Styles tweak
Fixed flexbox issue caused by compass upgrading
Merge pull request #88 from windyarts/flexbox-fix

Fixed flexbox issue caused by compass upgrading
Disable flexbox in webkit
Style tweak
Merge pull request #89 from windyarts/flexbox-fix

Flexbox fix