.banner{
  width: 680px;
  margin-left: auto;
  margin-right: auto;
}
.inner{
  float: left;
  width: 340px;
}
.banner_1{
  margin-right:5px;
}
.silk{
  width="60%";
  margin-right:5px;
    font-size:1m;
}
.silk_1{
  width="40%";
  font-family: メイリオ;
}
.center {
  text-align: center;
}
.cb{
  /* floatを解除 */
  clear: both;
}
.tbl_calendar {
  border: none !important;
  border-collapse: collapse !important;
  border-spacing: 0 !important;
}
.tbl_calendar th, .tbl_calendar td {
  padding: 4px !important;
  text-align: center !important;
  border-bottom: 1px solid #ccc !important;
}