重置样式

移动端

* {
  -webkit-tap-highlight-color: transparent;
  outline: 0;
  margin: 0;
  padding: 0;
  vertical-align: baseline;
}
body,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
dl,
dt,
dd,
ul,
ol,
li,
pre,
form,
fieldset,
legend,
button,
input,
textarea,
th,
td {
  margin: 0;
  padding: 0;
  vertical-align: baseline;
}
img {
  border: 0 none;
  vertical-align: top;
}
i,
em {
  font-style: normal;
}
ol,
ul {
  list-style: none;
}
input,
select,
button,
h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: 100%;
  font-family: inherit;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}
a {
  text-decoration: none;
  color: #666;
}
body {
  margin: 0 auto;
  min-width: 320px;
  max-width: 640px;
  height: 100%;
  font-size: 14px;
  font-family: -apple-system, Helvetica, sans-serif;
  line-height: 1.5;
  color: #666;
  -webkit-text-size-adjust: 100% !important;
  text-size-adjust: 100% !important;
}
input[type="text"],
textarea {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

PC 端

html,
body,
div,
h1,
h2,
h3,
h4,
h5,
h6,
p,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
input,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
textarea,
article,
aside,
audio,
canvas,
figure,
footer,
header,
mark,
menu,
nav,
section,
time,
video {
  margin: 0;
  padding: 0;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: 100%;
  font-weight: normal;
}
article,
aside,
dialog,
figure,
footer,
header,
hgroup,
nav,
section,
blockquote {
  display: block;
}
ul,
ol {
  list-style: none;
}
img {
  border: 0 none;
  vertical-align: top;
}
blockquote,
q {
  quotes: none;
}
blockquote:before,
blockquote:after,
q:before,
q:after {
  content: none;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}
strong,
em,
i {
  font-style: normal;
  font-weight: normal;
}
ins {
  text-decoration: underline;
}
del {
  text-decoration: line-through;
}
mark {
  background: none;
}
input::-ms-clear {
  display: none !important;
}
body {
  font: 12px/1.5 \5fae\8f6f\96c5\9ed1, \5b8b\4f53, "Hiragino Sans GB", STHeiti, "WenQuanYi Micro Hei",
    "Droid Sans Fallback", SimSun, sans-serif;
  background: #fff;
}
a {
  text-decoration: none;
  color: #333;
}
a:hover {
  text-decoration: underline;
}