loading1.html

<style type="text/css">


.background img {
  width: 100%;
  height: 100%;
}

.background.loading {
  height: 420px;
  width: 490px;
  padding: 10px;
}
.loading {
  position: relative;
  background-color: #e2e2e2;
}

.loading::before {
  display: block;
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  margin-top: -10px;
  transform: translateX(-100%);
  background: -webkit-gradient(linear, left top,
  right top, from(transparent),
  color-stop(rgba(255, 255, 255, .5)),
  to(transparent));

  background: linear-gradient(90deg, transparent,
  rgba(255, 255, 255, .5), transparent);

  animation: loading 1.2s infinite;
}

@keyframes loading {
  100% {
    transform: translateX(100%);
  }
}

</style>

<div style="text-align: -webkit-center;">

<div class="background loading">
  <img src="dynamicUI.svg">
</div>
<br>
<div class="background loading">
  <img src="table.svg">
</div>
<br>
<div class="background loading">
  <img src="plot-1.svg">
</div>
<br>
<div class="background loading">
  <img src="plot-2.svg">
</div>

</div>