#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 2500;
}
#header h1 {
  opacity: 1;
}

main {
  padding-top: 100px !important;
}
main .block {
  padding-bottom: 10rem;
}
main h1 {
  position: relative;
  text-align: center;
  padding-bottom: 1rem;
  margin-bottom: 8rem;
}
@media screen and (max-width: 767px) {
  main h1 {
    font-size: 2.4rem;
  }
}
main h1::after {
  content: "";
  display: block;
  position: absolute;
  width: 100px;
  height: 1px;
  background-color: #000;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
}
main h2 {
  margin-bottom: 3rem;
}
@media screen and (max-width: 767px) {
  main h2 {
    font-size: 1.8rem;
  }
}
main h3 {
  margin-bottom: 1rem;
  margin-top: 5rem;
}
@media screen and (max-width: 767px) {
  main h3 {
    font-size: 1.6rem;
  }
}
main p {
  line-height: 2;
}
@media screen and (max-width: 767px) {
  main p {
    font-size: 1.4rem;
  }
}
main ol {
  padding-left: 1.5ex;
  list-style-type: decimal;
  margin: 1rem;
}
main ol li {
  margin-bottom: 1rem;
  line-height: 1.8;
}
@media screen and (max-width: 767px) {
  main ol li {
    font-size: 1.4rem;
  }
}
main ol ul {
  padding-left: 1.5ex;
}
main ul {
  padding-left: 1.5ex;
  list-style-type: lower-alpha;
  margin: 1rem;
}
main ul li {
  margin-bottom: 1rem;
  line-height: 1.8;
}
@media screen and (max-width: 767px) {
  main ul li {
    font-size: 1.4rem;
  }
}
main ul ul {
  list-style-type: lower-roman;
  padding-left: 1.5ex;
}
main .update {
  margin-top: 6rem;
}
main hr {
  margin-bottom: 10rem;
}