所有htm文件添加BOM头
Revert "所有htm文件添加BOM头"

This reverts commit 4e698d5934449cb3ab312ba3572541b8c54480ce.
新增选择符级css hack一条
统一缩进
统一缩进
Merge branch 'master' into gh-pages
修正IE8下prefix不能对齐
Merge branch 'master' into gh-pages