.main {
    padding-bottom: 30px;
}


.main li {
    position: relative;
    width: 820px;
    height: 436px;
    margin-bottom: 40px;
}

.main li:last-child {
  height: 997px;
}

.jump_plus {
    position: absolute;
    top: 260px;
    right: 97px;
}