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HTML 

              
                <div class="spring" role="img" aria-label="Animated cartoon showing a sunny scene with a field with flowers and a flying bee."></div>
!

CSS 

              
                .spring  {
  --flower1: #dad;
  --flower2: #8af;
  --flower3: #fbd;
  width: 500px;
  aspect-ratio: 1;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background:
    /* flower 1 */
    radial-gradient(circle at 20% 60%, gold 1%, #0000 0),
    radial-gradient(200% 50% at 18% 60%, var(--flower1) 1%, #0000 0),
    radial-gradient(100% 150% at 20% 58%, var(--flower1) 1%, #0000 0),
    radial-gradient(circle at 18.5% 59%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(circle at 18.5% 61.5%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(circle at 21% 61.5%, var(--flower1) 1.75%, #0000 0),
    radial-gradient(circle at 21.5% 59%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(farthest-side at 100% 60%, #0000 90%, green 0 99.9%, #0000 0) 17.5% 80% / 5% 25% no-repeat,
    radial-gradient(farthest-side at 50% 100%, green 99.9%, #0000 0) 18.5% 70% / 8% 1.5% no-repeat,
    radial-gradient(farthest-side at 50% 20%, green 99.9%, #0000 0) 10% 75% / 8% 1.5% no-repeat,
    /* flower 2 */
    radial-gradient(circle at 25% 70%, gold 1%, #0000 0),
    radial-gradient(340% 150% at 25% 70.5%, var(--flower1) 1%, #0000 0),
    radial-gradient(100% 150% at 25% 68%, var(--flower1) 1%, #0000 0),
    radial-gradient(circle at 23.5% 69%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(circle at 23.5% 71.5%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(circle at 26% 71.5%, var(--flower1) 1.75%, #0000 0),
    radial-gradient(circle at 26.5% 69%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(farthest-side at 0% 75%, #0000 80%, green 0 99.9%, #0000 0) 25.5% 82% / 2% 15% no-repeat,
    /* flower 3 */
    radial-gradient(circle at 30% 50%, gold 1%, #0000 0),
    radial-gradient(340% 150% at 30% 50.5%, var(--flower3) 1%, #0000 0),
    radial-gradient(100% 150% at 30% 48%, var(--flower3) 1%, #0000 0),
    radial-gradient(circle at 28.5% 49%, var(--flower3) 1.5%, #0000 0),
    radial-gradient(circle at 28.5% 51.5%, var(--flower3) 1.5%, #0000 0),
    radial-gradient(circle at 31% 51.5%, var(--flower3) 1.75%, #0000 0),
    radial-gradient(circle at 31.5% 49%, var(--flower3) 1.5%, #0000 0),
    radial-gradient(farthest-side at 0% 55%, #0000 88%, green 0 99.9%, #0000 0) 30.5% 77% / 4% 35% no-repeat,
    radial-gradient(farthest-side at 50% 0%, green 99.9%, #0000 0) 28.5% 66% / 6% 1.25% no-repeat,
    /* flower 4 */
    radial-gradient(circle at 38% 58%, gold 1%, #0000 0),
    radial-gradient(350% 180% at 38% 57.75%, var(--flower2) 1%, #0000 0),
    radial-gradient(circle at 37.5% 55.5%, var(--flower2) 1.5%, #0000 0),
    radial-gradient(circle at 37% 60%, var(--flower2) 1.5%, #0000 0),
    radial-gradient(circle at 39.25% 60%, var(--flower2) 1.75%, #0000 0),
    radial-gradient(circle at 39.75% 55.75%, var(--flower2) 1.5%, #0000 0),
    radial-gradient(farthest-side at 100% 70%, #0000 75%, green 0 99.9%, #0000 0) 37.75% 78.5% / 2% 30% no-repeat,
    /* flower 5 */
    radial-gradient(circle at 45% 65%, gold 1%, #0000 0),
    radial-gradient(350% 200% at 45% 65.5%, var(--flower1) 1%, #0000 0),
    radial-gradient(100% 150% at 45% 63%, var(--flower1) 1%, #0000 0),
    radial-gradient(circle at 43.25% 63.5%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(circle at 44% 67%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(circle at 46.25% 66.25%, var(--flower1) 1.75%, #0000 0),
    radial-gradient(circle at 46.75% 63.75%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(farthest-side at 100% 70%, #0000 75%, green 0 99.9%, #0000 0) 44.5% 80% / 2% 20% no-repeat,
    /* flower 6 */
    radial-gradient(circle at 50% 71%, gold 1%, #0000 0),
    radial-gradient(350% 130% at 50% 71.5%, var(--flower2) 1%, #0000 0),
    radial-gradient(100% 150% at 50% 69%, var(--flower2) 1%, #0000 0),
    radial-gradient(circle at 48.25% 69.5%, var(--flower2) 1.5%, #0000 0),
    radial-gradient(circle at 49% 73%, var(--flower2) 1.5%, #0000 0),
    radial-gradient(circle at 51.25% 72.75%, var(--flower2) 1.75%, #0000 0),
    radial-gradient(circle at 51.75% 69.75%, var(--flower2) 1.5%, #0000 0),
    radial-gradient(farthest-side at 20% 68%, #0000 72%, green 74% 98%, #0000 100%) 50.5% 83% / 2% 14% no-repeat,
    /* flower 7 */
    radial-gradient(circle at 55% 63%, gold 1%, #0000 0),
    radial-gradient(350% 130% at 55% 63.5%, var(--flower1) 1%, #0000 0),
    radial-gradient(circle at 54.25% 61.5%, var(--flower1) 2%, #0000 0),
    radial-gradient(circle at 54% 65%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(circle at 56.25% 64.75%, var(--flower1) 1.75%, #0000 0),
    radial-gradient(circle at 56.75% 61.75%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(farthest-side at 20% 70%, #0000 72%, green 74% 98%, #0000 100%) 55.5% 80% / 2% 24% no-repeat,
    /* flower 8 */
    radial-gradient(circle at 62% 68%, gold 1%, #0000 0),
    radial-gradient(330% 170% at 62% 68.5%, var(--flower3) 1%, #0000 0),
    radial-gradient(circle at 60.5% 66.5%, var(--flower3) 1.5%, #0000 0),
    radial-gradient(circle at 63% 66.75%, var(--flower3) 2%, #0000 0),
    radial-gradient(circle at 61% 70%, var(--flower3) 1.75%, #0000 0),
    radial-gradient(circle at 63% 69.75%, var(--flower3) 1.75%, #0000 0),
    radial-gradient(farthest-side at 0% 60%, #0000 75%, green 76% 97%, #0000 0) 63% 81% / 2% 18% no-repeat,
    radial-gradient(farthest-side at 50% 100%, #7c8 99.9%, #0000 0) 59.5% 74.5% / 6% 0.75% no-repeat,
    radial-gradient(farthest-side at 50% 100%, green 99.9%, #0000 0) 59.5% 74% / 6% 1.25% no-repeat,
    radial-gradient(farthest-side at 50% 20%, green 99.9%, #0000 0) 48.5% 80% / 5% 1% no-repeat,
    /* flower 9 */
    radial-gradient(circle at 68% 53%, gold 1%, #0000 0),
    radial-gradient(330% 170% at 68% 53.5%, var(--flower1) 1%, #0000 0),
    radial-gradient(110% 140% at 68% 51%, var(--flower1) 1%, #0000 0),
    radial-gradient(circle at 66.25% 51.5%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(circle at 67% 55%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(circle at 69% 54.75%, var(--flower1) 1.75%, #0000 0),
    radial-gradient(circle at 69.25% 51.75%, var(--flower1) 1.5%, #0000 0),
    radial-gradient(farthest-side at 10% 60%, #0000 75%, green 76% 97%, #0000 0) 69% 78% / 3% 35.5% no-repeat,
    
    /* flower 10 */
    radial-gradient(circle at 75% 73%, gold 1%, #0000 0),
    radial-gradient(330% 130% at 75% 73.5%, var(--flower3) 1%, #0000 0),
    radial-gradient(110% 140% at 75% 71%, var(--flower3) 1%, #0000 0),
    radial-gradient(circle at 73.25% 71.5%, var(--flower3) 1.5%, #0000 0),
    radial-gradient(circle at 74% 75%, var(--flower3) 1.5%, #0000 0),
    radial-gradient(circle at 76% 74.75%, var(--flower3) 1.75%, #0000 0),
    radial-gradient(circle at 76.25% 71.75%, var(--flower3) 1.5%, #0000 0),
    radial-gradient(farthest-side at 10% 60%, #0000 75%, green 76% 97%, #0000 0) 76% 84% / 2% 12% no-repeat,
    radial-gradient(farthest-side at 50% 100%, green 99.9%, #0000 0) 74.75% 64% / 7% 1.25% no-repeat,
    /* flower 11 */
    radial-gradient(circle at 83% 62%, gold 1%, #0000 0),
    radial-gradient(330% 170% at 83% 62.5%, var(--flower2) 1%, #0000 0),
    radial-gradient(circle at 81.5% 60.5%, var(--flower2) 1.5%, #0000 0),
    radial-gradient(circle at 82% 64%, var(--flower2) 1.5%, #0000 0),
    radial-gradient(circle at 84% 63.75%, var(--flower2) 1.75%, #0000 0),
    radial-gradient(circle at 84% 60.5%, var(--flower2) 1.65%, #0000 0),
    radial-gradient(farthest-side at 10% 60%, #0000 75%, green 76% 97%, #0000 0) 84% 81.5% / 3% 25.5% no-repeat,
    /* ground */
    radial-gradient(100% 20% at 50% 90%, #7c8 45%, #0000 45.25%),
    radial-gradient(100% 20% at 50% 83%, #7c8 49%, #0000 49.25%),
    /* sun */
    radial-gradient(circle at 50% 0%, #0000 20%, #d90c 0 33%, #0000 0) 34.33% 30% / 5% 5% no-repeat,
    radial-gradient(circle at 32% 26%, #d90c 1%, #0000 0),
    radial-gradient(circle at 38% 26%, #d90c 1%, #0000 0),
    radial-gradient(circle at 35% 25%, #fe0 12%, #fd0c 0, #0000 25%),
    /* cloud */
    radial-gradient(circle at 50% 68%, #fff 10%, #0000 10.25%),
    radial-gradient(circle at 66% 70%, #fff 13%, #0000 13.25%),
    radial-gradient(circle at 76% 75%, #fff 8%, #0000 8.25%),
    radial-gradient(circle at 26% 78%, #fff 8%, #0000 8.25%),
    radial-gradient(circle at 37% 70%, #fff 9%, #0000 9.25%),
    radial-gradient(circle at 50% 60%, #f0f8ff 20%, #0000 20.25%),
    radial-gradient(circle at 30% 70%, #f0f8ff 12%, #0000 12.25%),
    radial-gradient(circle at 33% 53%, #f0f8ff 7%, #0000 6.25%),
    radial-gradient(circle at 16% 73%, #f0f8ff 8%, #0000 8.25%),
    radial-gradient(circle at 76% 73%, #f0f8ff 14%, #0000 14.25%),
    radial-gradient(circle at 68% 58%, #f0f8ff 8%, #0000 8.25%),
    radial-gradient(circle at 66% 80%, #f0f8ff 17%, #0000 17.25%),
    /* bg */
    linear-gradient(#def 0 0)
    ;
  box-shadow: 0 0 0 100vmax #def;
  abackground-color: #f002;
}

@keyframes fly {
  0%  { left: 60%; transform: rotateY(0); }
  50% { left: 30%; transform: rotateY(0); }
  51% { left: 30%; transform: rotateY(180deg); }
  99% { left: 60%; transform: rotateY(180deg); }
  100% { left: 60%; transform: rotateY(0); }
}

.spring::before {
  content: "";
  animation: fly 5s infinite;
  position: absolute;
  top: 48%;
  left: 60%;
  width: 8%;
  height: 6%;
  border-radius: 50%;
  background: 
    radial-gradient(circle at 26% 50%, #000 7%, #0000 0),
    radial-gradient(circle at 10% 50%, #000 5%, #0000 0),
    radial-gradient(circle at 50% 0%, #0000 20%, #000 0 60%, #0000 0) 15% 70% / 10% 15% no-repeat,
    radial-gradient(100% 200% at 0 50%, #0000 40%, #000 0 53%, #0000 0 66%, #000 0 80%, #0000 0 90%, #000 0);
  background-color: gold;
  box-shadow: 0 -20px 0 -5px #fffa, 10px -20px 0 -5px #fff, 17px 0 0 -13.5px;
}
!

JS
!
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