<button class="btn-class-name">
  <span class="back"></span>
  <span class="front"></span>
</button>
<style>
/* From Uiverse.io by catraco - Tags: button, active, 3d button */
.btn-class-name {
  --primary: 255, 90, 120;
  --secondary: 150, 50, 60;
  width: 60px;
  height: 50px;
  border: none;
  outline: none;
  cursor: pointer;
  user-select: none;
  touch-action: manipulation;
  outline: 10px solid rgb(var(--primary), .5);
  border-radius: 100%;
  position: relative;
  transition: .3s;
}

.btn-class-name