.course-wrap {
  position: relative;
  margin-bottom: 0;
  margin-top: 30px;
}

.course-wrap ul li {
  position: relative;
  width: 455px;
  margin-top: -100px;
  padding-bottom: 15px;
  transition: all .5s;
  list-style: none;
}

.course-wrap ul li .iconfont {
  color: #22589d;
  font-size: 56px;
  line-height: normal;
  background: linear-gradient(to right, #3d9cfd, #006ec2, #22589d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.course-wrap ul li h2 {
  margin: 2px 0 7px;
  color: #22589d;
  font-size: 24px;
  font-weight: 700;
}

.course-wrap ul li p {
  line-height: 30px;
  margin-bottom: 10px;
}

.course-wrap ul li .circle {
  position: absolute;
  top: 30px;
  right: -11px;
  display: inline-block;
  padding: 4px;
  border: 8px solid #e7eef6;
  background-color: #22589d;
  border-radius: 25px;
  z-index: 9;
}

.course-wrap ul li .line {
  position: absolute;
  top: 41px;
  right: 0;
  display: inline-block;
  width: 42px;
  border-bottom: 1px dashed #acacac;
  z-index: 8;
}

.course-wrap ul li:after {
  content: '';
  display: inline-block;
  position: absolute;
  top: 0;
  right: 0;
  width: 2px;
  height: 100%;
  background-color: #22589d;
  z-index: 99;
}

.course-wrap ul li:nth-child(odd) {
  margin-right: 454px;
  padding-right: 55px;
  text-align: right;
}

.course-wrap ul li:nth-child(odd) p {
  text-align: right;
}

.course-wrap ul li:nth-child(even) {
  margin-left: 453px;
  padding-left: 55px;
}

.course-wrap ul li:nth-child(even) .circle {
  left: -11px;
  right: auto;
}

.course-wrap ul li:nth-child(even) .line {
  left: 0;
  right: auto;
}

.course-wrap ul li:nth-child(even):after {
  top: 0;
  left: 0;
}

.course-wrap ul li:nth-child(even):before {
  left: auto;
  right: 0;
}

.course-wrap ul li:first-child {
  margin-top: 0;
}

.course-wrap ul li:last-child {
  padding-bottom: 95px;
}

.course-wrap ul li:last-child:before {
  height: 80%;
  height: calc(100% - 80px);
}

.course-wrap ul li:before {
  content: '';
  display: inline-block;
  position: absolute;
  top: 0;
  left: 0;
  width: 96%;
  height: 100%;
  transition: all .5s;
  z-index: -1;
}

.course-wrap ul li:hover:before {
  transform: scaleX(1);
  background: linear-gradient(to left, #e9f3ff, transparent);
}

.course-wrap ul li:hover:nth-child(even):before {
  background: linear-gradient(to right, #e9f3ff, transparent);
}

.course-wrap ul li:hover .circle {
  z-index: 101;
}