body {
  background: #f2f2f2;
  background-image: url(https://tensaikun.jp/images/background/bg_left.png), url(https://tensaikun.jp/images/background/bg_right.png);
  background-repeat: no-repeat, no-repeat;
  background-position: 0 0, 100% 100%;
  background-attachment: fixed;
  margin: 0;
}

header {
  display: flex;
  width: calc(100% - 40px);
  height: 80px;
  align-items: center;
  background-color: #fff;
  border-bottom: 1px solid #e0e0e0;
  box-shadow: 1px 1px 4px rgba(0, 0, 0, .16);
  padding: 0 20px;
}

.terms {
  display: flex;
  width: 100%;
  max-width: 960px;
  margin: 80px auto;
  gap: 20px;
  font-size: 14px;
  position: relative;
  text-align: justify;
}

.terms .main {
  display: block;
  position: static;
  width: 65%;
}

.terms .main .title {
  font-weight: 900;
  text-align: center;
  font-size: 24px;
  height: 3em;
}

.terms .main .label {
  margin-top: 1.5em;
  font-weight: 700;
}

.terms .main .updated {
  text-align: right;
  margin-top: 3em;
}

.terms .content {
  display: block;
  position: sticky;
  width: 35%;
  height: 98vh;
  overflow: auto;
  top: 0;
}

.terms .content a {
  display: block;
  line-height: 2.5em;
  color: #666;
  text-decoration: none;
  padding: 0 8px;
}

.terms .content a.active {
  font-weight: 700;
}

footer {
  width: calc(100% - 80px);
  padding: 24px 40px;
  background-color: #fff;
}

footer .link {
  margin: 0 auto;
  font-size: 12px;
  color: #666;
}

footer .link-items {
  display: flex;
  gap: 10px;
}

footer .link-items a {
  color: #666;
  text-decoration: none;
}

footer .divider {
  border: 1px solid #e0e0e0;
  width: 100%;
  height: 0;
  margin: 22px 0;
}

footer .copyright {
  display: flex;
  align-items: center;
  font-size: 12px;
}

footer .copyright .copyright-text {
  color: #666;
  flex-grow: 1;
}