h1  { font-size: large }
h2   { font-size: large; margin-right: 20px; margin-left: 20px }
.text { line-height: 1.4em; text-indent: 1em; margin-right: 20px; margin-left: 20px }
.title { font-size: x-large; line-height: 1.4em; text-align: center }
.auther { line-height: 1.4em; text-align: center }
.explanation { color: red; font-size: x-small; line-height: 1.4em; text-indent: 1em; margin-right: 20px; margin-left: 20px }
.caution { color: red; font-size: x-small; line-height: 1.4em; text-indent: 1em; margin-right: 20px; margin-left: 20px }
.memo { line-height: 1.4em; margin-right: 20px; margin-left: 20px }
.programSource  { font-size: small; line-height: 1.4em; margin-right: 20px; margin-left: 20px; width: 400px }
.comment { font-size: x-small; line-height: 1.4em; margin-right: 20px; margin-left: 20px }