# 重置

html
  box-sizing border-box
  -ms-overflow-style scrollbar
  -webkit-tap-highlight-color rgba(0,0,0,0)

*,
*::before,
*::after
  box-sizing inherit
  
body
  -webkit-touch-callout none
  -webkit-text-size-adjust none  
  
body, h1, h2, h3, h4, h5, h6, p
  margin 0
  padding 0

ol, ul, dl
  margin 0
  padding 0
  list-style none

table
  width 100%
  border-collapse collapse
  border-spacing 0

a
  color link
  text-decoration none
  
img
  border none
  vertical-align middle

input,
button,
select,
textarea
  font inherit
  line-height inherit
  -webkit-appearance none

input,
textarea,
select
  &.disabled
    cursor not-allowed
    pointer-events none

a,
area,
button,
[role="button"],
input,
label,
select,
summary,
textarea
  touch-action manipulation  
  
[overflow-h]
  overflow hidden !important

[overflow-a]
  overflow auto !important
  &.touch
    -webkit-overflow-scrolling touch  
    
::-webkit-input-placeholder
  color placeholder