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CSS

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HTML 

              
                <div class="rise"></div>
!

CSS 

              
                /* Presets */

*, *:before, *:after {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

:root {

 /*dimensions */
  --width: 100vh;
  --height: 100vh;
}

body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: end;
  overflow: hidden;
  //perspective-origin: top center;
  background: linear-gradient(#A3B2C9, #2D5478);
}


div:before, div:after {
  display: block;
  content: '';
}

div.rise {
    width: 100vw;
    height: 100vh;
    display: flex;
    position: relative;
    justify-content: center;
    align-items: end;
    background: 

      
      /* cloud1 */  
      radial-gradient(ellipse, #D9D9D9 8vh, transparent 8vh)  25vh 15vh / 19vh 12vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 9vh, transparent 9vh)  20vh 10vh / 21vh 12vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 4vh, transparent 4vh)  20vh 20vh / 11vh 9vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 8vh, transparent 8vh)  10vh 10vh / 20vh 18vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 7vh, transparent 7vh)  2vh 15vh / 21vh 14vh  no-repeat,
  
  
      /* cloud1 */  
      radial-gradient(ellipse, #D9D9D9 8vh, transparent 8vh)  15vh 55vh / 19vh 12vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 6vh, transparent 6vh)  5vh 55vh / 32vh 17vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 4vh, transparent 4vh)  15vh 5vh / 21vh 15vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 8vh, transparent 8vh)  0vh 50vh / 32vh 16vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 7vh, transparent 7vh)  15vh 55vh / 31vh 14vh  no-repeat,
  
      
      /* cloud3 */  
      radial-gradient(ellipse, #D9D9D9 8vh, transparent 8vh)  75vh 35vh / 19vh 12vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 8vh, transparent 8vh)  60vh 30vh / 29vh 17vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 4vh, transparent 4vh)  83vh 32vh / 11vh 9vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 8vh, transparent 8vh)  70vh 30vh / 24vh 16vh  no-repeat,
      radial-gradient(ellipse, #D9D9D9 7vh, transparent 7vh)  82vh 35vh / 21vh 14vh  no-repeat;
  
}


div.rise:before {
    display: flex;
    justify-content: center;
    align-items: end;
    height: 100vh;
    width: 20vh;
    box-shadow: rgba(66, 87, 113, 1) 0px 0px 0px 2px, rgba(66, 87, 113, 1) 0px 15px 16px 2px, rgba(205, 205, 205, 0.5) 0px 1px 0px inset;
    // // z-index: 99;
    transform: perspective(50px) rotateX(15deg) rotateY(-30deg) rotateZ(-20deg);
    
    --left-side: 
    /* windows */
      
    repeating-linear-gradient(90deg, transparent 0 10px, #2C3B4E 10px 11px, #364B64 12px 20px),
    /* wall */
   linear-gradient(180deg, #607A99 0%, #607A99 100%);
  
   background:
      var(--left-side);
}
!

JS 

              
                /* This entry was an attempt at trying to incorporate perspective and using the rotates (X, Y, and Z) with perspective and perspective-origin to provide depth, in this case, to show a tower rising into the sky.There is a time-lapse video of making this piece at https://youtu.be/Ak6DSrM8AJw */
!
999px

Console