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  <div class="cloud" id="cloud-base"></div>
  <div class="cloud" id="cloud-back"></div>
  <div class="cloud" id="cloud-mid"></div>
  <div class="cloud" id="cloud-front"></div>
  <svg width="0" height="0"> 
  <!--Top Layer-->
    <filter id="filter-base">
      <feTurbulence type="fractalNoise" baseFrequency="0.011" numOctaves="5" 
seed="8517" />     
      <feDisplacementMap  in="SourceGraphic" scale="120" />
    <filter id="filter-back">
      <feTurbulence type="fractalNoise" baseFrequency="0.011" numOctaves="3" 
seed="8517" />     
      <feDisplacementMap  in="SourceGraphic" scale="120" />
  <filter id="filter-mid">
        <feTurbulence type="fractalNoise" baseFrequency="0.011" numOctaves="3"
      <feDisplacementMap  in="SourceGraphic" scale="120" />
    <filter id="filter-front">
        <feTurbulence type="fractalNoise" baseFrequency="0.009" numOctaves="4" seed="8517"/>
      <feDisplacementMap  in="SourceGraphic" scale="50" />


                body {
  width: 100vw;
  height: 100vh;
  background: linear-gradient(0deg, #62a0d8 0%, #2178d1 50%, #085cb3 100%);
  padding: 1%;
  overflow: hidden;

.cloud {
  width: 600px;
  height: 100px;
  border-radius: 50%;
  position: absolute;
  top: -100px;
  left: -100px;

#cloud-base {
  top: 90px;
  height: 100px;
  filter: url(#filter-base);
  box-shadow: 200px 170px 19px 40px rgba(255, 255, 255, 0.9);
#cloud-back {
  top: 90px;
  height: 30px;
  width: 500px;
  filter: url(#filter-back);
  box-shadow: 200px 200px 10px 40px rgba(215, 215, 215, 0.3);

#cloud-mid {
  top: 80px;
  width: 580px;
  height: 35px;
  filter: url(#filter-mid);
  box-shadow: 210px 250px 28px 30px rgba(66, 105, 146, 0.2);

#cloud-front {
  top: 70px;
  width: 450px;
  height: 40px;
  left: -20px;
  filter: url(#filter-front);
  box-shadow: 210px 272px 30px 0px rgba(0, 0, 0, 0.4);