/****reset****/
body,
div,
table,
tr,
td,
th,
h1,
h2,
h3,
h4,
h5,
h6,
form,
input,
button,
label,
select,
textarea,
p,
u,
i,
em,
ul,
ol,
li,
dl,
dd,
dt,
img,
article,
aside,
details,
figcaption,
figure,
footer,
header,
menu,
nav,
section {
  margin: 0;
  padding: 0;
}

* {
  box-sizing: border-box;
}

img {
  border: 0 none;
  max-width: 100%;
}

li {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: 100%;
  font-weight: normal
}

em,
i,
dfn {
  font-style: normal;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
}

a,
input,
select,
textarea,
area,
button {
  outline: none;
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  color: inherit;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

input::-webkit-input-placeholder {
  color: #999;
}

input:focus::-webkit-input-placeholder {
  color: #999;
}

a {
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

textarea {
  overflow: auto;
  resize: none;
}

html,
body {
  width: 100%;
  scroll-behavior: smooth;
  font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif;
}

html {
  font-size: 100px;
  font-size: calc(100vw/3.75);
  font-family: SimHei;
}

body {
  font-size: 16px;
}