* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

em,
i {
  font-style: normal
}

li {
  list-style: none
}

img {
  border: 0;
  vertical-align: middle
}

button {
  cursor: pointer
}

a {
  color: #666;
  text-decoration: none
}

button,
input {
  font-family: Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, "\5B8B\4F53", sans-serif;
  border: 0;
  outline: none;
}

body {
  -webkit-font-smoothing: antialiased;
  background-color: #fff;
  font: 12px/1.5 Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, "\5B8B\4F53", sans-serif;
  color: #666
}

.hide,
.none {
  display: none
}

.clearfix:after {
  visibility: hidden;
  clear: both;
  display: block;
  content: ".";
  height: 0
}

.clearfix {
  *zoom: 1
}