* {
  margin: 0;
  padding: 0;
}

em,
i {
  font-style: normal;
}

li {
  list-style: none;
}

img {
  border: 0;
  vertical-align: middle;
  -webkit-user-select: none;
  -ms-user-select: none;
  -moz-user-select: none;
  -khtml-user-select: none;
  user-select: none;
}

button {
  cursor: pointer;
}

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

a:hover {
  color: #c81623;
}

button,
input {
  font-family: Microsoft YaHei, tahoma, arial, Hiragino Sans GB, \\5b8b\4f53,
    sans-serif;
}

html,
body {
  -webkit-font-smoothing: antialiased;
  background-color: #fff;
  font: 14px/1.5 Microsoft YaHei, tahoma, arial, Hiragino Sans GB, \\5b8b\4f53,
    sans-serif;
  color: #fff;
  width: 100%;
  height: 100%;
  font-size: 100px;
}

.hide,
.none {
  display: none;
}

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

.clearfix {
  zoom: 1;
}

.flex {
  display: flex;
  justify-content: center;
  align-items: center;
}

.space-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-start {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.flex-end {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.align-item-start {
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
}