h2,.contents p { margin-top:1em; }
.contents h2 { margin-bottom:2em; width:540px; height:140px; text-indent:-9999em; overflow:hidden; background:url(../images/title_activity.jpg) left center no-repeat; }
h3,h4 { margin-top:2em; }

h3 { background:url(../images/h4bg.gif) left center no-repeat; padding-left:16px; padding-bottom:4px; font-size:103%; font-weight:bold; color:#060; }

.contents a { text-decoration:underline; }

.contents em { font-weight:bold; color:red;}
.contents .square span { display:block; text-align:right; }
.contents dt { font-weight:bold; }

div.square { width: 540px; margin-top:1em; padding:0.5em; background-color:#ffd; border: solid 1px #060; }