www.lightcourse.com/public/static/home/new/css/about.less

@c1: #3b52f6;
.item-wrap(@num,@between,@mb) {
  display: flex;
  flex-wrap: wrap;
  .item {
    width: calc((100% - (@num - 1) * @between) / @num);
    margin-right: @between;
    margin-bottom: @mb;
    &:nth-of-type(@{num}n) {
      margin-right: 0;
    }
  }
}
.dot {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.dots(@num) {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: @num; //行数
  -webkit-box-orient: vertical;
}
.setBetween {
  display: flex;
  justify-content: space-between;
}
.setRowCenter {
  display: flex;
  justify-content: center;
}
.setColumnCenter {
  display: flex;
  align-items: center;
}
.setCenter {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.ra {
  border-radius: 0.2rem;
  overflow: hidden;
}
.bs {
  box-shadow: 0 0 0.5rem #ebebeb;
}
.box-shadow {
  box-shadow: 0rem 0.3rem 0.5rem 0rem rgba(36, 65, 116, 0.1);
}
.tit-line(@fs,@pb,@mb,@width,@height,@color) {
  font-size: @fs;
  padding-bottom: @pb;
  margin-bottom: @mb;
  position: relative;
  &::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: @width;
    border-bottom: @height solid @color;
  }
}
.tit-line-center(@fs,@pb,@mb,@width,@height,@color) {
  font-size: @fs;
  padding-bottom: @pb;
  margin-bottom: @mb;
  position: relative;
  &::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: @width;
    border-bottom: @height solid @color;
    transform: translateX(-50%);
  }
}
.btn {
  padding: 0.3rem 1rem;
  background-color: @c1;
  color: #fff;
  border-radius: 2rem;
  font-size: 0.7rem;
  &.s1 {
    background-color: transparent;
    border: 1px solid @c1;
    color: @c1;
  }
}
.a-hover {
  &:hover {
    color: @c1;
  }
}
.fb {
  font-family: "puhuiti-2-115";
}

.list-banner {
  position: relative;
  & > .img {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 20.8rem;
    padding: 2rem;
    transform: translate(-50%, 50%);
    box-shadow: 0rem 0.15rem 0.8rem 0rem rgba(32, 30, 29, 0.35);
    border-radius: 0.25rem;
    background-color: #fff;
  }
  h3 {
    .fb;
  }
}
.about {
  padding-top: 5rem;
  .main-title{
    margin-bottom: 2rem;
    *{
      text-align: left;
    }
    h2{
      margin-bottom: 0;
      line-height: 1.4;
    }
    p{
      color: #333;
      max-width: 100%;
      margin-top: 0 !important;
    }
  }

  .container {
    margin-bottom: 2rem;

    b {
      .fb;
    }
    h4 {
      font-size: 2rem;
      .fb;
    }

    p {
      margin-top: 1rem;
    }
    span {
      &.c1 {
        color: @c1;
      }
    }
    em {
      font-weight: bold;
      .fb;
      font-size: 1.2rem;
    }
    .f-img {
      img {
        float: right;
        max-width: 23rem;
      }
    }
  }
  .main-1 {
    .container {
      h2 {
        .fb;
        line-height: 1.2;
      }
      h6 {
        font-size: 1.5rem;
        color: @c1;
      }
      p {
      }
      a {
        .fb;
        text-decoration: underline;
      }
    }
  }
  .main-2 {
    padding-top: 0;

    h3 {
      color: @c1;
      text-align: center;
      font-weight: 500;
      margin-bottom: 3rem;
    }
    .container {
      .item {
        .setColumnCenter;
        margin-bottom: 2rem;
        &:last-of-type {
          margin-bottom: 0;
        }
        .i {
          width: 5rem;
          height: 5rem;
          border-radius: 50%;
          .setCenter;
          margin-right: 2rem;
          flex-shrink: 0;
          .icon {
            font-size: 2rem;
            color: @c1;
          }
        }
        .text {
          h6 {
            line-height: 1.4;
            margin-bottom: 0.5rem;
          }
          p {
            line-height: 1.8;
            color: #666;
          }
        }
      }
    }
  }
  .main-3 {
    background-color: @c1;
    * {
      color: #fff;
    }
    h2 {
      color: #fff;
    }
  }
  .main-4 {
    padding-bottom: 10rem;

    .container {
      margin-bottom: 0;
      .content {
        p {
          text-align: center;
          line-height: 1.8;
          margin-bottom: 1rem;
          &:last-of-type {
            margin-bottom: 0;
          }
        }
      }
      .img-wrap {
        display: flex;
        box-shadow: 0rem 0.15rem 0.8rem 0rem rgba(32, 30, 29, 0.35);
        padding: 2rem;
        margin-top: 2rem;
        .img {
          width: 21rem;
          flex-shrink: 0;
          position: relative;
          h4 {
            font-size: 1.5rem;
            line-height: 1.2;
            text-align: center;
          }
          img{
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translate(-50%,8rem);
          }
        }
        .txt {
          p {
            margin-top: 0;
          }
        }
      }
    }
  }
  .main-5 {
    background-color: #fafafb;
    .container {
    }
  }
  .main-6 {
    padding-top: 0;
    .container {
    }
  }
  .main-7 {
    padding-top: 0;

    h3 {
      font-size: 1.5rem;
      color: @c1;
      text-align: center;
      font-weight: 500;
      margin-bottom: 3rem;
    }
    .container {
      .item-wrap(5, 1.5rem, 1.5rem);
      .item {
        height: 5rem;
        display: flex;
        img {
          margin: auto;
        }
      }
    }
  }
}
@media screen and (max-width:1024px){
  .about .main-4 .container .img-wrap .img img{
   max-width: 13rem;
  }
}
@media screen and (max-width: 820px) {
  .about .main-4 .container .img-wrap .img img{
    max-width: 18rem;
  }
}

@media screen and (max-width: 768px) {
  .list-banner{
    &>.img{
      width: 50%;
      padding: 1rem;
    }
  }
  .about {
    .container{
      margin-bottom: 0;
    }
    .main-1 {
      .container {
        h2{
          br{
            display: none;
          }
        }
        .img {
          display: none;
        }
      }
    }
    .main-2 {
      .container {
        .item {
          align-items: flex-start;
          .i {
            width: 3rem;
            height: 3rem;
          }
        }
      }
    }
    .main-4{
      padding-bottom: 2rem;
      .container{
        .img-wrap{
          flex-direction: column;
          .img{
            h4{
              br{
                display: none;
              }
            }
            img{
              display: none;
            }
          }
        }
      }
    }
    .main-5 {
      .container {
        flex-wrap: nowrap;
        overflow-x: scroll;
        .item {
          width: 100%;
          flex-shrink: 0;
        }
      }
    }
    .main-6 {
      .container {
        padding: 0;
        .swiper-slide {
          flex-direction: column;
          .img {
            width: 100%;
            height: 12rem;
          }
        }
        .swiper-button {
          display: none;
        }
      }
    }
    .main-7 {
      .container {
        margin-bottom: 0;
        .item {
          width: calc((100% - 1.5rem) / 3);
          margin-right: 0.5rem !important;
          &:nth-of-type(4n) {
            margin-right: 0 !important;
          }
        }
      }
    }
  }
}