html, body, div, span, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
abbr, address, cite, code,
del, dfn, em, img, ins, kbd, q, samp,
small, strong, sub, sup, var,
b, i,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, figcaption, figure,
footer, header, hgroup, menu, nav, section, summary,
time, mark, audio, video {
    margin:0;
    padding:0;
    border:0;
    outline:0;
    font-size:100%;
    vertical-align:baseline;
    background:transparent;
    box-sizing:border-box;
}
html {
    width: 100%;
    height: 100%;
   -webkit-text-size-adjust: 100%;
   font-family: -apple-system, "PingFang SC","Helvetica Neue", Helvetica, STHeiTi, sans-serif;
   -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
input, select,textarea {
    -webkit-appearance: none;
    appearance:none;
    background: transparent;
    border: 0 none;
    resize:none;
    outline:none;
}
img,a{
    -webkit-touch-callout:none;
}
a,a:active,a:hover {
    text-decoration: none;
    color: inherit;
}
a,button,input,textarea{
    -webkit-tap-highlight-color:rgba(0,0,0,0);
}