fix typography example bug
修改首字下沉命名 #4
update package.json
Merge branch 'master' of https://github.com/ecomfe/est
update readme.md
remove unnecessary file
fix placeholder bug
Merge branch 'master' of https://github.com/ecomfe/est
增加布局：自适应宽度的视频
Merge branch 'ecomfe-est'
更新自适应视频布局