.list_kakko {
  margin-top: 20px;
  text-align: left;
}
.list_kakko > li {
  list-style-type: none;
  counter-increment: cnt_kakko;
  position: relative;
  padding-left: 3em;
  line-height: 1.6;
  margin-top: 10px;
}
.list_kakko > li:before {
  content: "(" counter(cnt_kakko) ")";
  display: inline-block;
  width: 2em;
  text-align: right;
  position: absolute;
  top: 0;
  left: 0;
}
.list_kakko > li:first-of-type {
  margin-top: 0;
}