.item_box {
  position: relative;
  width: 24.3%;
  height: 100%;
  margin-right: 0.9%;
  margin-bottom: 0.9%;
  border: #da391c solid 1px;
  float: left;
  line-height: 0;
  overflow: hidden;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -o-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box; }

.item_box_hou {
  border: #5db8c4 solid 1px; }

.item_box_off {
  border: #f1c920 solid 1px; }

.item_box_edu {
  border: #d63264 solid 1px; }

.item_box:last-child {
  border: none; }

.item_box:nth-child(4n) {
  margin-right: 0; }

.item_box img {
  width: 100%;
  height: 100%; }

@media screen and (max-width: 499px) {
  .item_box {
    margin-bottom: 10px; }

  #edicational #img_title_educational_sp_5 {
    display: none; } }
@media screen and (max-width: 320px) {
  .item_box {
    margin-bottom: 10px; }

  #edicational #img_title_educational_sp_5 {
    display: block; }

  #edicational .sptitle img:last-child {
    display: none; } }

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