Changed style
hearder
Merge branch 'refs/heads/BB'
Changed style of index.
Merge remote-tracking branch 'refs/remotes/origin/Annbranch'
Changed the picture in training page.
Merge branch 'refs/heads/BB'
修改锻炼板块的速度
Merge remote-tracking branch 'refs/remotes/origin/master'
修改了锻炼，营养页面的翻页块，，，修改了补充1的文章列表排版
修改了锻炼页面1视频的提示块
修复缓存BUG
update back css and js files
更新了二级页面