#floorplan-overlay {
    position: fixed;
    top:0;
    left:0;
    width: 220px;
	height: 302px;
    border: 1px solid #aaa;
    background: #fff;
    z-index: 10;
    opacity:0.5;
  }

      .room-no-btn {
        position: absolute;
        background: #0ff;
        border: 1px solid #444;
        border-radius: 50%;
        width: 32px;
        height: 32px;
        text-align: center;
        line-height: 32px;
        cursor: pointer;
        font-weight: bold;
        opacity: 0.8;
      }

      /* 色が変わったとき用のクラス */
      .active-btn {
        background: #f00;
      }

#room1-btn { top: 60px; left: 36px; }
#room2-btn { top: 200px; left: 36px; }
#room3-btn { top: 220px; left: 100px; }
#room4-btn { top: 60px; left: 100px; }
#room5-btn { top: 60px; left: 170px; }
#room6-btn { top: 200px; left: 170px; }
#room7-btn { top: 150px; left: 170px; }
#room8-btn { top: 110px; left: 170px; }
#room9-btn { top: 240px; left: 160px; }
#room10-btn { top: 0px; left: 100px; }