.ctn-main > #main-section {
  text-align: center;
}
.subsection-content > ol > li {
  list-style: upper-roman;
  list-style-position: inside;
}
.subsection-content > ol > li > ol > li {
  list-style: lower-alpha;
  list-style-position: inside;
}
ol > li::marker {
  font-weight: bold;
  font-size: 18px;
  color: black;
}
ol > li {
  padding-bottom: 10px;
}
.subsection-content > h4{
  text-align: center;
}