html, body {
  position: relative;
  margin: 0;
  padding: 0;
  height: 100%;
  background: #fff;
}

a {
  color: unset;
  text-decoration: none;
}

.header {
  text-align: center;
  background: #333;
  color: #fff;
  padding: 20px 0px;
  margin: 0;
  margin-bottom: 10px;
}

.description {
  padding: 6px 30px;
  margin: 0;
  font-weight: 400;
}

.description li {
  padding: 3px 0px;
}

.wrapper {
  margin-top: 50px;
}

.container {
  width: 100%;
  height: 600px;
}

.item {
  display: inline-block;
  width: 250px;
  opacity: 1;
}

.masonrygrid.horizontal .item {
  width: auto;
  height: 250px;
}


.item .info {
  display: flex;
  align-items: center;
  font-weight: bold;
  color: #777;
  height: 30px;
}
.item .thumbnail {
  overflow: hidden;
  border-radius: 8px;
  font-size: 0;
  height: calc(100% - 30px);
}

.item .thumbnail img {
  width: 100%;
  height: 100%;
  border-radius: 8px;
  background: #eee;
  object-fit: contain;
}

.item .thumbnail img {
  width: 100%;
  height: 100%;
  border-radius: 8px;
  background: #eee;
  object-fit: contain;
}

.masonrygrid.horizontal .item .thumbnail img {
  width: auto;
  height: 210px;
}


.item.animate {
  transition: opacity ease 1s;
  transition-delay: 0.2s;
  opacity: 1;
}

.placeholder {
  width: 250px;
  border-radius: 5px;
  background: #eee;
  height: 250px;
}


.loading {
  position: absolute;
  width: 100%;
  height: 50px;
  line-height: 50px;
  text-align: center;
  font-weight: bold;
}

.button-area {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  text-align: center;
  height: 50px;
  z-index: 1;
}