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}