html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  vertical-align: baseline;
}

body {
  font-family: 'Helvetica Neue',Helvetica,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',SimSun,sans-serif;
  overflow: auto;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

a {
  color: #4078c0;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
}

ul {
  list-style: none;
}

.hljs {
  line-height: 1.8;
  font-family: Menlo, Monaco, Consolas, Courier, monospace;
  font-size: 12px;
  padding: 18px 24px;
  background-color: #f9fafc;
  border: solid 1px #eaeefb;
  margin-bottom: 25px;
  border-radius: 4px;
  -webkit-font-smoothing: auto;
}