<div class="container"></div>

<style>
/* From Uiverse.io by elijahgummer  - Tags: simple, animation, blue, gradient, circle, transition, pattern */
.container {
  width: 100%;
  height: 100%;
  background: lightblue;
  position: relative;
  overflow: hidden;
}

.container::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, #3498db 10%, transparent 20%),
    radial-gradient(circle, transparent 10%, #3498db 20%);
  bac