body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,textarea,p,blockquote,th,td{
    margin:0;
    padding:0;
}
a {
  text-decoration: none;
}
h1,h2,h3,h4,h5,h6{
  font-weight: 400;
}
ul,ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{box-shadow:rgba(0,0,0,.3);border-radius:10px}::-webkit-scrollbar-thumb{border-radius:10px;background:rgba(0,0,0,.2);box-shadow:rgba(0,0,0,.5)}
/* img {vert-align: top;} 移动端图片边框   相当于  border:0 */