JSFiddle - React, Tailwind, and code Playground

by artgas_pro

HTML

<button data-popup-id="main" class="info-header__lead link-on-popup">
                  @lang('header.lead')<span class="flare"></span>
               </button>

CSS

.flare {
  position: absolute;
  top: 0;
  left: -150%;
  width: 45px;
  height: 100%;
  transform: skewX(45deg);
  background: linear-gradient(90deg, rgba(137, 54, 142, 0.1), rgba(137, 54, 142, 0.4));
  opacity: 0;
  animation: pulseColorAnimation 2s infinite;
}

@keyframes pulseColorAnimation {
  0% {
    transform: scale(1);
    opacity: 0;
    background: linear-gradient(90deg, rgba(137, 54, 142, 0.1), rgba(137, 54, 142, 0.4));
  }
  50% {
    transform: scale(1.2);
    opacity: 1;
    background: linear-gradient(90deg, rgba(255, 0, 0, 0.1), rgba(255, 0, 0, 0.4));
  }
  100% {
    transform: scale(1);
    opacity: 0;
    background: linear-gradient(90deg, rgba(137, 54, 142, 0.1), rgba(137, 54, 142, 0.4));
  }
}