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

a {
  text-decoration: none;
  cursor: pointer;
  color: inherit;
}

body {
  font-size: 14px;
  font-family: "微软雅黑";
  font-weight: 400;
  background: #FFFFFF;
  transition: all 1s;
  scroll-behavior: smooth;
}

html {
  scroll-behavior: smooth;
}

li {
  list-style: none;
}

.w {
  width: 1300px;
}

.pandding-y50 {
  padding: 0 50px;
}

/* 单行文本... */
.danhang {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.duohang2 {
  /* 多行溢出隐藏 */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.duohang3 {
  /* 多行溢出隐藏 */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}