h2.section-title {
  font-size: 1.6rem;
  font-weight: 600;
  padding-bottom: 0.4rem;
  border-bottom: 3px solid #0d6efd; /* Bootstrapのprimary色 */
  /* display: inline-block; */
}

:root{ --color-header_green_1:#13a05e; }
.bg-header-title-color-1 { background-color: var(--color-header_green_1) !important; }