/* notation
======================================= */
.notation__inner {
  padding-top: 0;
}
.notation__item:nth-child(n+2) {
  margin-top: 2.5em;
}
.notation__item-title {
  letter-spacing: 0.05em;
  font-weight: bold;
  border-bottom: 1px solid #BBBBBB;
  padding: 0.5rem 0;
}
.notation__item-text {
  letter-spacing: 0.05em;
  padding: 0.5rem 0;
}