main .project {
  display: flex;
}
main .project .itemList {
  width: 30%;
  margin-right: 20px;
}
main .project .itemList li.on {
  position: relative;
  background: #E6E6E6;
}
main .project .itemList li.on .img1 {
  display: none;
}
main .project .itemList li.on .img2 {
  display: inline-block;
}
main .project .itemList li.on span {
  color: #3385FF;
}
main .project .itemList li.on::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 3px;
  height: 100%;
  background: #3385FF;
}
main .project .itemList li {
  display: flex;
  min-height: 90px;
  padding: 20px;
  box-sizing: border-box;
  align-items: center;
}
main .project .itemList li img {
  width: 15px;
  margin-right: 15px;
}
main .project .itemList li .img1 {
  display: inline-block;
}
main .project .itemList li .img2 {
  display: none;
}
main .project .itemList li span {
  font-size: 14px;
  color: #333;
}
main .project .infoList {
  width: 70%;
}
main .project .infoList li.on {
  display: block;
}
main .project .infoList li {
  display: none;
}
main .project .infoList h3 {
  padding: 5px 0 20px;
}
main .project .infoList p {
  margin-bottom: 20px;
  font-size: 13px;
  line-height: 1.5;
  color: #333;
}
main .project .infoList img {
  width: 100%;
}