.parallaxWrap{
  height: 2500px;
  margin-top: 500px;
  text-align: center;
}

.parallax{
  display: inline-block;
  width: 40px;
  margin-right: 10px;
  height: 100px;
  line-height: 100px;
  text-align: center;
  background: #2bb8c3;
  color: #fff;
}

.addblock{
  position: fixed;
  left: 10px;
  top: 10px;
}

.destory{
  position: fixed;
  left: 100px;
  top: 10px;
}