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

html {
  line-height: 1; }

ul {
  list-style: none; }

table {
  border-collapse: collapse;
  border-spacing: 0; }

caption,
td,
th {
  padding: 5px 10px;
  font-weight: 400;
  vertical-align: middle;
  border: 1px solid #DDD; }

blockquote,
q {
  quotes: none; }

blockquote:after,
blockquote:before,
q:after,
q:before {
  content: "";
  content: none; }

a img {
  border: none; }

a {
  text-decoration: none;
  color: #000; }

a:hover {
  color: red; }

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section,
summary {
  display: block; }

html {
  font-size: 100px; }

body {
  margin: 0 auto;
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  font-size: 14px;
  color: #636b6f;
  background: #f0f2f5; }

.nav {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  text-align: center;
  -webkit-box-shadow: 0 1px 3px #ddd;
          box-shadow: 0 1px 3px #ddd;
  border-top: 3px solid #f4645f;
  background: #fff; }
  .nav a {
    display: block;
    padding: 16px 20px;
    font-size: 14px; }

.footer {
  padding: 20px 0;
  text-align: center;
  color: #89898c;
  background: #1b1c1d; }
  .footer a {
    color: #89898c; }
    .footer a:hover {
      text-decoration: underline; }

.wrapper {
  margin: 1.5em auto;
  padding: 1em;
  max-width: 800px;
  -webkit-box-shadow: 0 1px 3px #eee;
          box-shadow: 0 1px 3px #eee;
  border: 1px solid #e3eaef;
  border-radius: 5px;
  background: #fff; }

.arclist li {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  border-bottom: 1px solid #f2f2f2; }
  .arclist li a {
    padding: 10px 0;
    color: #636b6f; }
    .arclist li a:hover {
      text-decoration: underline; }
    .arclist li a:visited {
      color: #a2a2a2; }
  .arclist li .info {
    color: #bab9bb; }

.detail-title {
  font-size: 20px; }

.detail-info {
  padding: 10px 0;
  font-size: 0.9em;
  color: #adb1af;
  border-bottom: 1px solid #f2f2f2; }

.detail-content {
  margin-top: 10px; }
  .detail-content img {
    max-width: 100%; }
  .detail-content blockquote {
    display: block;
    margin: 5px 0;
    padding: 5px 10px;
    color: #646566;
    border-left: 3px solid #ccc;
    background: #F7F8FA; }
  .detail-content ol {
    padding-left: 15px; }
  .detail-content p {
    padding-top: 5px;
    padding-bottom: 5px; }
  .detail-content pre {
    margin-top: 5px;
    margin-bottom: 5px; }
.detail-content a {
    color:blue; }