body {
  background: #333;
}

*, *:before, *:after {
  box-sizing: border-box;
}

.load-more-container {
  background: #fff;
  width: 500px;
  min-height: 500px;
  margin: 20px auto;
  position: relative;
}
.load-more-container ul {
  list-style-type: none;
  padding: 0;
}
.load-more-container ul:after {
  content: "";
  display: table;
  clear: both;
}
.load-more-container ul li {
  width: calc(25% - 10px);
  margin: 10px 5px 0;
  height: 100px;
  background:  #1D95F8;
  color: #fff;
  float: left;
  border-radius: 2px;
}
.load-more-container ul li:nth-child(1n + 5) {
  max-height: 0;
  opacity: 0;
  transition: 0.1s ease-in;
}
.load-more-container .load-more-btn {
  width: 150px;
  line-height: 40px;
  border-radius: 2px;
  margin: 0 auto;
  display: block;
  background:   #494747;
  color: #fff;
  cursor: pointer;
  text-align: center;
}
.load-more-container .load-more-btn:hover {
  background: #333;
}
.load-more-container .load-more-btn .loaded {
  display: none;
}
.load-more-container #load-more {
  display: none;
}
.load-more-container #load-more:checked ~ ul li:nth-child(1n + 5) {
  max-height: 999px;
  opacity: 1;
  transition: 0.2s ease-in;
}
.load-more-container #load-more:checked ~ .load-more-btn .loaded {
  display: block;
}
.load-more-container #load-more:checked ~ .load-more-btn .unloaded {
  display: none;
}