* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
a {
  text-decoration: none;
}
li {
  list-style: none;
}
.w {
  width: 1300px;
  margin: 0 auto;
}
.single-line {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.multi-line {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  text-overflow: ellipsis;
}