/*メインイメージ*/
.cont_mainimg>div{
  background: url("/resources/img/special/atrium/pct_eventarchives_mainimg_sp.jpg") no-repeat ;
  background-size:100% auto;
}

.archives_list_box {
  width: auto;
  border: 1px solid #e9e9e9;
  background-color: #FFF;
  border-radius: 5px;
  padding: 10px;
  display: inline-block;
  margin: 8px auto 0;
  vertical-align: top;
  box-shadow: 0 0 0 1px rgba(242,242,242,10);
}
.archives_list_box:first-child {
  margin: 0 auto
;}

.archives_list_box img {
  float: left;
  margin-right: 12px;
}
.archives_list_box h3 {
  font-size: 14px;
  font-weight: bold;
  margin-top: 0;
}
.archives_days {
  font-size: 11px;
  display: block;
  margin: 6px 0;
}

.archives_list_box p {
  font-size: 12px;
}