body {
  background: #F4F3F3;
}
header {
  height: 88px;
  background: #FFFFFF;
  box-shadow: 0px 4px 0px 0px #FF5E00;
}
.header-box {
  height: 100%;
  margin: 0 auto;
  width: 1280px;
  padding: 0 40px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}
.dividing-line {
  width: 1px;
  height: 40px;
  background: #D8D8D8;
  margin: 0 32px 0 12px;
}
.header-title {
  display: flex;
  align-items: center;
}
.header-title a {
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #999999;
  line-height: 22px;
  letter-spacing: 1px;
}
.header-title img {
  width: 12px;
  height: 12px;
  margin: 0 8px;
}
main {
  width: 1280px;
  padding: 0 40px 60px;
  overflow: hidden;
  margin: 4px auto 0;
  background: #fff;
  box-sizing: border-box;
}
.category-big-title {
  font-size: 30px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #333333;
  margin-top: 40px;
}
.big-title {
  font-size: 26px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #333333;
  margin-top: 40px;
}
.program-list ul {
  display: flex;
  flex-wrap: wrap;
}
.program-list ul li {
  margin-top: 20px;
  width: 220px;
  flex: 0 0 220px;
  margin-left: 25px;
}
.program-list ul li .diy-img-box {
  display: inline-block;
  width: 100%;
  height: 124px;
  border-radius: 4px;
  overflow: hidden;
}
.program-list ul li p {
  height: 40px;
  font-size: 14px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #333333;
  line-height: 20px;
  overflow:hidden;
  text-overflow:ellipsis;
  display:-webkit-box;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:2;
}
.program-list ul li p:hover {
  color: #FF5E00;
}