@charset "UTF-8";
html {
  scroll-behavior: smooth;
}
/***********************/
h1,h2,h3,h4,h5,h6,p,ul,ol,dl,
div.paragraph, div.list, pre {
  margin: 1em auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
.hdesc > *,
#content > .hdesc + *:not(.section) > *,
.section > .part > *,
body #header > *,
body #footer > * {
  max-width: 75rem;
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
}
/***********************/
#b4 select[name="landA"] {
  display: none;
}
#a4 select[name="landB"] {
  display: none;
}
/***********************/
.hide {
  display: none !important;
}