body { font-size: 100%; line-height: 1.0; }
h1 { font-size: 130%; }
h2 { font-size: 110%; }
h3 { font-size: 105%; }
div{ font-size: 100%; }

hr,.hidden,#menu { display:none; }
ul { list-style:none; }
a img, #clear { border:none; }
p,li,dd { line-height:1.8; }

body { background:url(img/background0.gif) 20% bottom no-repeat fixed; font-weight:bold; }
#main { width: 560px; margin:auto; }

#main_contents { text-align:center; }
#main_contents li { display:inline; }

#rule { font-weight:bold; }
#rule span { color:#ff0000; }

#title_pet h2 { height:250px; }
#title_pet h2 { background:url(img/title_pet.gif) 50% 70px no-repeat; text-indent:-9999px; }
#head_title h1 { height:150px; }
#head_title h1 { background:url(img/title1.gif) 50% 10px no-repeat; text-indent:-9999px; }

dt { color:#ff6600; font-size: 110%; font-weight:bold; padding:5px 0 5px 10px; border:2px dotted #000000; background:#ffffff; }
dd { padding:5px 0; }

#teacher h3 { padding:5px 0 0 0; border-bottom:1px solid #000000; }
#teacher span { font-size: 110%; }

#how { font-size: 80%; font-weight:normal; }

#cat { padding-left:140px; background:url(img/cat.gif) 0 10px no-repeat; }
#dog { background:url(img/dog.gif) right 10px no-repeat; }
#lizard { background:url(img/lizard.gif) right top no-repeat; height:78px}
#giraffe  { padding-left:150px; background:url(img/giraffe.gif) -20px bottom no-repeat; }

#back { text-align:right; font-size:80%; }