* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
  -webkit-touch-callout: none;
  -ms-content-zooming: none;
}

html, body {
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
  overflow: hidden;
}

#pano {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.hotspot {
  background-color: red;
  width: 30px;
  height: 30px;
  margin-left: -15px;
  margin-top: -15px;
}