.video-page {
  margin: 0 auto;
  padding: 30px 0 0 15px;
  width: 1200px;
  background-color: #000;
}

.video-list {
  overflow: hidden;
}

.video-li {
  margin: 20px 20px 10px 20px;
  float: left;
  width: 256px;
  color: #fff;
}

.video-li .cover {
  display: block;
  position: relative;
  overflow: hidden;
  width: 256px;
  padding-bottom: 130%;
}

.video-li .cover img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  transition: all 0.6s;
}

.video-li .cover::before {
  content: "";
  position: absolute;
  width: 56px;
  z-index: 1;
  height: 56px;
  background-color: #005489;
  bottom: 0;
  right: 0;
}

.video-li .cover::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  z-index: 2;
  margin-top: -15px;
  margin-left: -6px;
  border-top: 16px solid transparent;
  border-bottom: 16px solid transparent;
  border-left: 16px solid #fff;
  bottom: 10px;
    right: 17px;
}

.video-li .cover img:hover {
  transform: scale(1.1);
}

.video-li .title {
  margin-top: 20px;
  font-size: 20px;
  line-height: 30px;
  font-weight: bold;
  height: 120px;
  color: #fff;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.video-li .title a {
  color: #fff;
}

.video-li .title a:hover {
  color: #005489;
}

.common-loading .loading-more {
  color: #333;
  background-color: rgba(255, 255, 255, 0.8);
}

.common-loading .loading-more:hover {
  background-color: rgba(255, 255, 255, 1);
}

@media screen and (max-width: 750px) {
  .video-page {
    padding: 0.2rem .15rem;
    width: 100%;
  }

  .video-li {
    margin: 0.3rem 0.15rem .1rem .15rem;
    width: calc(50% - 0.3rem);
  }

  .video-li .cover {
    width: 100%;
  }

  .video-li .title {
    height: 1.36rem;
        font-size: 0.26rem;
        line-height: 0.34rem;
        margin-top: .3rem;
  }

  .video-li .cover::before {
    width: 0.8rem;
    height: 0.8rem;
    margin-top: -0.4rem;
    margin-left: -0.4rem;
  }

  .video-li .cover::after {
    margin-top: -0.16rem;
    margin-left: -0.08rem;
    border-top: 0.2rem solid transparent;
    border-bottom: 0.2rem solid transparent;
    border-left: 0.2rem solid #fff;
  }
}