* {
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  vertical-align: baseline;
  background: transparent;
  -webkit-tap-highlight-color:rgba(0,0,0,0);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", SimSun, sans-serif;
}
html {
  -webkit-text-size-adjust: none;
}
section {
  display: block;
}
ol,
ul {
  list-style: none;
}
li {
  list-style: none;
}
i,
em {
  font-style: normal;
}
button,
input,
select,
textarea {
  margin: 0;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  vertical-align: middle;
  outline:0;
  box-shadow: 0;
}

input:focus {
  outline: 0; 
  box-shadow: 0;
}   

/*
 -webkit-user-modify:read-write-plaintext-only;
*/

/*去除android浏览器下a/input等元素获得焦点时高亮边框*/
input{
  -webkit-tap-highlight-color:rgba(0,0,0,0);
  -webkit-user-modify:read-write-plaintext-only;
 
}

label,button{
  -webkit-tap-highlight-color:rgba(0,0,0,0);
}