.container .main {
  width: 1300px;
  margin: 50px auto 20px;
  display: flex;
  justify-content: start;
  flex-wrap: wrap;
}
.container .main div {
    margin-right: 20px;
    position: relative;
    width: 413px;
    background: #F5F5F5;
    border: 1px solid #EEEEEE;
    text-align: center;
    margin-bottom: 14px;
    cursor: pointer;
}
.container .main div .cover{
    width: 100%;
    height: 240px;
    object-fit: cover;
}

.container .main div .btn{
    position: absolute;
    bottom: 90px;
    left: 20px;
    width: 50px;
    height: 50px;
}
.container .main div h3 {
  font-size: 20px;
  margin: 20px 0;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #535353;
}