.mainer {
  padding: 60px 100px;
}
.mainer .list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-gap: 50px;
  /* 网格项之间的间隙 */
}
.mainer .list .item {
  background: #ffffff;
  box-shadow: 0px 0px 30px 0px rgba(33, 41, 50, 0.05);
  border-radius: 10px;
  border: 4px solid transparent;
  padding: 20px;
  display: flex;
  min-height: 270px;
}
.mainer .list .item:hover {
  border: 4px solid var(--primary-color);
}
.mainer .list .item .item-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 160px;
}
.mainer .list .item .item-left .pic {
  width: 60px;
  height: 60px;
  background-position: center center;
  background-repeat: no-repeat;
}
.mainer .list .item .item-left .title {
  margin-top: 20px;
  font-size: 22px;
  color: #1a1a1a;
}
.mainer .list .item .item-left .url {
  margin-top: 40px;
  width: 36px;
  height: 31px;
  background: url(../images/article-classAndList-list/url.png);
}
.mainer .list .item .item-left .url:hover {
  background: url(../images/article-classAndList-list/url-sel.png);
}
.mainer .list .item .item-right {
  flex: 1;
}
.mainer .list .item .item-right .arc-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: dashed 1px #e7e7e7;
  padding: 16px 0;
}
.mainer .list .item .item-right .arc-item .arc-item-title {
  font-size: 18px;
  color: #919191;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-left: 10px;
}
.mainer .list .item .item-right .arc-item .arc-item-time {
  margin-left: 10px;
  flex-shrink: 0;
  font-size: 16px;
  color: #ccc;
  width: 94px;
}
.mainer .list .item .item-right .arc-item:hover {
  background-color: #f5f5f5;
}
.mainer .list .item .item-right .arc-item:hover .arc-item-title {
  color: var(--primary-color);
}