style.css

body{
  background:#f3f3f3;
  margin:0;
  padding:0;
  font-family: 'Helvetica', 'Arial', sans-serif;
  height:100%;
}

.popin{
  background:#fff;
  padding:15px;
  box-shadow: 0 0 20px #999;
  border-radius:2px;
  position: absolute;
  top:15px;
  bottom: 15px;
  left:460px;
  right:15px;
}
.popin-left{
  background:#fff;
  padding:15px;
  box-shadow: 0 0 20px #999;
  border-radius:2px;
  position: absolute;
  top:15px;
  bottom: 15px;
  left:15px;
  width:400px;
}
#map{
  position: absolute;
  top:15px;
  bottom: 15px;
  left:15px;
  right:15px;
  background:#6699cc;
}
#rooms-descriptions{
  position: absolute;
  top:15px;
  bottom: 15px;
  left:15px;
  right:15px;
  resize: none;
  overflow: auto;
}

.alert{
  position:relative;
  float:top;
  margin-left: 490px;
  margin-right: 45px;
  margin-top: 15px;
  margin-bottom:15px;
  height: 30px;
  background:red;
  padding:15px;
  box-shadow: 0 0 20px #999;
  border-radius:2px;
}
.alerts .alert:first-child{
  margin-top: 45px;
}
#map div{
  cursor:crosshair;
}