.model-list-19 {
  padding-top: 50px;
  padding-bottom: 50px;
  overflow: hidden;
}
.model-list-19 .main {
  height: 580px;
}
.model-list-19 .leftbox {
  float: left;
  width: 60%;
  height: 100%;
}
.model-list-19 .leftbox .itembox {
  padding-left: 50%;
  padding-top: calc(50% - 200px);
}
.model-list-19 .leftbox .itembox .item {
  position: relative;
  font-size: 16px;
  height: 38px;
  width: fit-content;
  line-height: 40px;
  padding: 0 15px 0 20px;
  margin-bottom: 10px;
  opacity: 0;
}
.model-list-19 .rightbox {
  position: relative;
  float: right;
  width: 40%;
  height: 100%;
}