.konw-before .know-before-title h3 {
  font-size: 40px;
  margin-bottom: 33px;
}
.konw-before .know-before-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.konw-before .know-before-item {
  width: 642px;
  height: 273px;
  background: #fafafa;
  box-sizing: border-box;
  padding: 30px 30px 0 30px;
  position: relative;
  margin-bottom: 50px;
}
.konw-before .know-before-item:last-child {
  margin-bottom: 0;
}

.konw-before .know-before-item-title {
  display: flex;
  align-items: flex-end;
  margin-bottom: 30px;
}
.konw-before .know-before-item-title img {
  display: block;
  width: 50px;
  height: 50px;
  margin-right: 10px;
}
.konw-before .know-before-item-title h4 {
  font-size: 20px;
}
.konw-before .know-before-item p {
  font-size: 16px;
  line-height: 20px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  overflow: hidden;
  -webkit-line-clamp: 4;
}
.konw-before .know-before-item a {
  position: absolute;
  height: 60px;
  line-height: 60px;
  border-top: 2px solid #fff;
  width: calc(100% - 60px);
  bottom: 0;
  left: 30px;
  text-align: right;
  display: block;
  background: url(../assets/jiantou-2.png) no-repeat right center;
  background-size: auto 10px;
  padding-right: 30px;
}
.konw-before .know-before-item a:hover {
  color: #568faf;
}