html,body,div,ul,li,p,h1,h2,h3,h4,h5,h6,span{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body{
  color: #333;
  font-family: "微软雅黑";
  min-width: 1220px;
}
li{
  list-style: none;
}
a{
  text-decoration: none;
}
.w-1220{
  width: 1220px;
  margin: 0 auto;
}
.color-999{
  color: #999;
}
.color-666{
  color: #666;
}
.color-333{
  color: #333;
}
.font-14{
  font-size: 14px;
  line-height: 19px;
}
.font-16{
  font-size: 16px;
  line-height: 21px;
}
.flex-x{
  display: flex;
}
.flex-xb{
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.flex-xc{
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-yb{
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.flex-yc{
  display: flex;
  flex-direction: column;
  justify-content: center;
}