body { margin: 0; padding: 0; background-color: #000000; background-image: url(../picc/bg_l.jpg); background-position: left top; background-repeat: no-repeat; }
#sis { font-family: Arial, Helvetica, sans-serif; font-size: 9px; color: #FFFFFF; width: 100%; height: 100%; position: absolute; background-image: url(../picc/bg_r.jpg);  background-position: right top; background-repeat: no-repeat; }
#sis a:link, #sis a:active, #sis a:visited { Font-family: Arial, Helvetica, sans-serif; font-size: 9px; color: #FFFFFF; text-decoration: none; }
#sis a:hover { Font-family: Arial, Helvetica, sans-serif; font-size: 9px; color: #FFFFFF; text-decoration: underline; }
#logo { width: 772px; margin-top: 150px;  margin-left: auto; margin-right: auto; margin-bottom: 50px;  }
#navi { width: 700px; margin-right: auto; margin-left: auto; text-align: center;  }
#navi img:hover { opacity: 0.6; }
.img { margin-right: 100px; }