input[type="checkbox"]:checked::before,
input[type="radio"]:checked::before {
  content: "\2713" !important; /* Unicode character for a checkmark */
  display: inline-block !important;
  width: 13px !important;
  height: 13px !important;
  margin-right: 5px !important;
  background-color: #587246 !important;
  border-radius: 2px !important;
  text-align: center !important;
  line-height: 12px !important;
  color: white !important;
  position: relative !important;
  top: -4px !important;
}