remove pointer-events, use display,

[jljsj33]

1. Drawer 使用了 css 属性“pointer-events ”，但是这个属性在IE10 上并不支持,IE 10 not support pointer-events ant-design/ant-design#11583

改成用 display,, @chenshuai2144 antd 里要改下样式...

2. [Drawer] Bug: Fail to scroll up on mobile  ant-design/ant-design#11443

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@9a5a632). Click here to learn what that means.
The diff coverage is 42.85%.

@@            Coverage Diff            @@
##             master      #29   +/-   ##
=========================================
  Coverage          ?   75.55%           
=========================================
  Files             ?        3           
  Lines             ?      315           
  Branches          ?      113           
=========================================
  Hits              ?      238           
  Misses            ?       70           
  Partials          ?        7

Impacted Files	Coverage Δ
src/Drawer.js	75.44% <42.85%> (ø)

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