.off_track_section {
    background-color: #a7aaad; /* or any shade of grey */
    font-size: 1.1rem; /* slightly smaller than fs-5 */
    padding: 1rem;
    border-radius: 0.25rem;
    margin-bottom: 1.5rem;
}
.definition_section {
    background-color: #61aa88; /* or any shade of grey */
    font-size: 1.1rem; /* slightly smaller than fs-5 */
    padding: 1rem;
    border-radius: 0.25rem;
    margin-bottom: 1.5rem;
}

.custom-img-size {
  /*width: 66.66%;*/
  height: 66.66%;
  display: block;
  margin-left: auto;
  margin-right: auto;
}