.main_box {
  display: flex;
  justify-content: center;
  margin: 40px 40px 40px 40px;
}
.main_box .institution_box {
  width: 672px;
  height: 860px;
  position: relative;
  background: url("../organization.png") no-repeat;
  background-size: 100% 100%;
}
.main_box .institution_box .institution {
  display: flex;
  padding: 0 6px;
  position: absolute;
  top: 50%;
  left: 20px;
  transform: translateY(-10px);
}
.main_box .institution_box .institution .institution_item {
  margin-left: 35px;
}
.main_box .institution_box .institution .institution_item:first-child {
  margin-left: 0;
}
.main_box .institution_box .institution .institution_item a {
  width: 30px;
  display: flex;
  flex-direction: column;
  text-align: center;
  color: #d71617;
  cursor: pointer;
}