section {
margin-bottom: 1em;
}


/* アコーディオン */

.down dl.acordion{
margin:0;
}
.down dt.trigger {
-webkit-border-radius:5px;
border-radius:1px;
font-size: 17px;
font-weight: bold;
color: #000000;
border:solid 1px #999999;
background: -webkit-gradient(linear, left top, left bottom, from(#FFFFFF), to(#E2E3E6));
text-align:left;
margin-bottom:0;
padding:10px;
}
.down dt.active{
border-radius: 3px 3px 0 0;
}
.down dt.trigger span.open-close {
background:url(../images/point_plus.png) no-repeat right center;
float:right;
width:20px;
height:20px;
text-indent: -9999em;
}
.down dt.active span.open-close {
background:url(../images/point_none.png) no-repeat right center;
float:right;
width:20px;
height:20px;
}
.down dd.acordion_tree{
padding:10px;
border: 1px solid #999999;
border-top:none;
}