.main strong {
  position: relative;
}
.main strong::after {
  content: '';
  position: absolute;
  bottom: -0.4rem;
  left: -0.5rem;
  right: -0.5rem;
  height: 0.6rem;
  z-index: -1;
  background-image: url("underline223.svg");
  background-repeat: none;
  background-size: cover;
}
.main p > strong, .main h1 > strong{
  font-weight: 400;
}
.main p > strong::after {
  bottom: -0.2rem;
  height: 0.5rem;
  left: -0.25rem;
  right: -0.25rem;
}