Ripple Wave

.bhe-20__btn {
  padding: 12px 32px;
  font-size: 13.5px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  letter-spacing: 0.02em;
  color: inherit;
  background: transparent;
}

.bhe-20__btn {
  position: relative;
  overflow: hidden;
}
.bhe-20__ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.32);
  transform: scale(0);
  animation: rwave 0.7s linear;
  pointer-events: none;
}
@keyframes rwave {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bhe-20__btn,
  .bhe-20__btn * {
    animation: none !important;
  }
}

.bhe-20__btn {
  padding: 12px 32px;
  font-size: 13.5px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  letter-spacing: 0.02em;
  color: inherit;
  background: transparent;
}

.bhe-20__btn {
  position: relative;
  overflow: hidden;
}
.bhe-20__ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.32);
  transform: scale(0);
  animation: rwave 0.7s linear;
  pointer-events: none;
}
@keyframes rwave {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bhe-20__btn,
  .bhe-20__btn * {
    animation: none !important;
  }
}

document.querySelectorAll(".bhe-20__btn").forEach(function (btn) {
  btn.addEventListener("click", function (e) {
    const c = document.createElement("span");
    const d = Math.max(btn.offsetWidth, btn.offsetHeight);
    const r = btn.getBoundingClientRect();
    c.className = "bhe-20__ripple";
    c.style.cssText =
      "width:" + d + "px;height:" + d + "px;" +
      "left:" + (e.clientX - r.left - d / 2) + "px;" +
      "top:" + (e.clientY - r.top - d / 2) + "px";
    btn.appendChild(c);
    c.addEventListener("animationend", function () { c.remove(); });
  });
});

document.querySelectorAll(".bhe-20__btn").forEach(function (btn) {
  btn.addEventListener("click", function (e) {
    const c = document.createElement("span");
    const d = Math.max(btn.offsetWidth, btn.offsetHeight);
    const r = btn.getBoundingClientRect();
    c.className = "bhe-20__ripple";
    c.style.cssText =
      "width:" + d + "px;height:" + d + "px;" +
      "left:" + (e.clientX - r.left - d / 2) + "px;" +
      "top:" + (e.clientY - r.top - d / 2) + "px";
    btn.appendChild(c);
    c.addEventListener("animationend", function () { c.remove(); });
  });
});