.post-item-container {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
}

.post-item {
  flex: 0 0 25%;
  padding: 13px;
  overflow: hidden;
}

@media(max-width: 991px) {
  .post-item {
    flex: 0 0 33%;
  }
}

@media(max-width: 767px) {
  .post-item {
    flex: 0 0 50%;
  }
}

@media(max-width: 575px) {
  .post-item {
    flex: 0 0 100%;
  }
}

.post-item:hover {
  text-decoration: none;
}

.post-item__thumbnail {
  min-height: 200px;
  background-color: #ced4da;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 5px;
  position: relative;
}

.post-item__image{
  width: 100%;
}

.post-item__update {
  position: absolute;
  top: 10px;
  left: 10px;
  background-color: #20233d;
  color: #fff;
  padding: 5px 15px;
}

.post-item__tag {
  text-align: center;
  font-weight: bold;
  background-color: #1B2754;
  color: #f6ea8c;
  width: 60px;
  height: 30px;
  line-height: 40px;
  transform: rotate(45deg);
  position: absolute;
  right: -19px;
  top: -4px;
}

.post-item__title {
  font-size: 24px;
  color: #303030;
  margin: 0;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.post-item__content {
  font-size: 18px;
  color: #999;
  margin: 0;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}