.case {
  flex-wrap: wrap;
  margin-top: 60px;
}

.case_item {
  width: 30%;
  height: 436px;
  border: 1px solid #eeeeee;
  padding: 20px;
  margin-bottom: 40px;
  transition: all 0.3s;
}

.case_item:hover {
  border: 1px solid #36afbc;
}

.case_item .hint {
  width: 30px;
  height: 2px;
  background: #36afbc;
  margin: 30px 0 20px 0;
}

.case_item .font-title {
  font-size: 14px;
  font-weight: bold;
  color: #000000;
  margin-bottom: 30px;
}