.sec_heading {
  font-weight: bold;
  line-height: 1;
  padding-left: 15px;
  padding-bottom: 23px;
  margin-bottom: 56px;
  border-bottom: 1px solid #CBC6C0;
  position: relative;
}
.sec_heading::after {
  content: '';
  display: block;
  width: 8px;
  height: 29px;
  background-color: #164DDB;
  position: absolute;
  top: 3px;
  left: 0;
}

@media (max-width: 768px) {
  .sec_heading {
    font-size: 44px;
    line-height: 1.2;
    padding-left: 24px;
    padding-bottom: 15px;
    margin-bottom: 30px;
  }
  .sec_heading::after {
    width: 12px;
    height: 44px;
    top: 0px;
  }
}

@media (max-width: 480px) {
  .sec_heading {
    font-size: 20px;
    padding-left: 12px;
  }
  .sec_heading::after {
    width: 6px;
    height: 22px;
  }
}