.sentence {
  white-space: nowrap;
}
.minus {
  letter-spacing: -0.4em;
}
.minus .normal {
  letter-spacing: normal;
}

H1 {
  font-size: 1.5rem;
  font-weight: bold;
  line-height: 1.5;
  text-align: center;
  margin-bottom: 1rem;
}

H2 {
  font-size: 1.1rem;
  font-weight: bold;
  line-height: 1.5;
  margin-bottom: 1rem;
  background-color: #ddd;
  padding: 9px 18px;
}

.container .introduction {
  margin: 0 18px;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.container .content {
  margin: 0 18px;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.container .content p.target {
  margin-bottom: 1rem;
}

/* override top.css */
a {
  color: #F00;
  text-decoration: none;
}
a:hover { color: #F00 }
a:visited { color: #F00 }
a:active { color: #F00 }

.footer .copyright {
  font-size: 110%;
  padding-right: 1px;
}