@import url("https://fonts.googleapis.com/css2?family=Roboto&display=swap");

* {
  box-sizing: border-box;
}

body {
  display: grid;
  place-items: center;
  min-height: 100vh;
  margin: 0;
  font-family: Roboto, sans-serif;
  background-color: #000;
}

button {
  margin: 10px 0;
  padding: 20px 30px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #fff;
  background-color: purple;
  border: 1px solid purple;
  overflow: hidden;
  cursor: pointer;
  &:focus {
    outline: none;
  }
}

.ripple {
  position: relative;
  &::after {
    content: var(--content);
    position: absolute;
    top: var(--top, 0);
    left: var(--left, 0);
    width: 100%;
    aspect-ratio: 1;
    background-color: #fff;
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    animation: scale 0.5s ease-out;
    pointer-events: none;
  }
}

@keyframes scale {
  to {
    transform: translate(-50%, -50%) scale(3);
    opacity: 0;
  }
}