style.css

.m5dd_list {
  display: flex;
  cursor: pointer;
  font-size: 1.2em;
  padding: 0.2em 0.5em;
}

.m5dd_list>span:nth-child(1) {
  flex: 1;
}

.m5dd_list>span:nth-child(2) {
  color: #aaa;
}

.m5dd_list:nth-child(even) {
  background: #ecedf0;
}

.m5dd_list:not(.use)>span {
  text-decoration: line-through;
  color: #ccc;
}