.temp-model-topic {
  overflow: hidden;
  margin: 0 auto;
  width: 990px;
  height: auto;
  padding-top: 20px;
}
.temp-model-topic .item {
  position: relative;
  float: left;
  margin-right: 10px;
  margin-bottom: 20px;
  margin-left: 10px;
  width: 310px;
  height: 231px;
  border-radius: 4px;
  background: #fff;
}

.temp-model-topic .item .item-img{
  display: block;
  width: 100%;
  height: 175px;
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
  background: center no-repeat;
  background-size: cover;
}
.temp-model-topic .item-icon{
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: 40px;
}
.temp-model-topic .item-text {
  overflow: hidden;
  padding: 0 10px;
  font-size: 14px;
  height: 36px;
  line-height: 18px;
  overflow: hidden;
  word-wrap: break-word;
  word-break: break-all;
  margin: 10px auto;
}