ul {
  padding-left: 0;
}
ul>li {
  font-size: larger;
  display: block;
  margin: 15px;
}
ul ul {
  padding-left: 0;
  display: grid;
  grid-template-columns: repeat( auto-fit, minmax(40px, 60px) );
  list-style-type: none;
}
ul>li>ul>li {
  
  /* flex: 1 1 20px; */
  font-size: initial;
  max-width: 60px;
  width: 40px;
  min-height: 20px;
  border: 1px solid #000;
  display: inline-block;
  margin: 10px 0 0 10px;
  padding: 5px;

  text-align: center;

  word-wrap: break-word;
}
.section-info {
  font-size: x-small;
}

.hidden {
  display: none;
}