div            { font-size: 12px; line-height: 16px; }
div.book       { font-size: 12px; line-height: 18px; }
div.navi       { font-size: 12px; line-height: 12px; }
div.qa         { font-size: 12px; line-height: 16px; color: #7777aa; }

div.small      { font-size: 10px; line-height: 12px; }
div.small2      { font-size: 10px; line-height: 12px;  color: #666666; }
div.big        { font-size: 16px; line-height: 24px; }

span           { font-size: 12px; line-height: 16px; }
span.small     { font-size: 10px; line-height: 12px; }

a              { text-decoration: none; }

a:link         { color: #7777aa; }
a:visited      { color: #7777aa; }
a:hover        { color: #d72d58; text-decoration: underline; }
a:active       { color: #d72d58; text-decoration: underline; }