html,body{
  /* -webkit-text-size-adjust: 100%; */
  background-color:#fff;
  font-size:16px;
  font-family: -apple-system,BlinkMacSystemFont,'Segoe UI','Helvetica Neue',Arial,sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-font-smoothing: antialiased;
  line-height: normal;
  /*CSS3提供，清除默认样式*/
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  outline:none;
  // user-select: none;
}
:focus{
  outline:none;
}
body,input,textarea,table,h1,h2,h3,h4,h5,h6,p,img,ul,ol,li,dl,dt,dd{margin:0;padding:0;}
ul,ol,li,dl,dt,dd{list-style-type:none;}
a{text-decoration: none;}
img{vertical-align:middle; font-size:0; line-height:0;}