Ripple Effect Pure Css Transparent

I'm trying to create a pure CSS ripple effekt like this one: https://codepen.io/finnhvman/pen/jLXKJw Except that I want to use transparent white as background color to be able to u

Solution 1:

You can reverse the colors in the radial-gradient which is the background of the .button:hover rule:

.background {
  width: 150px;
  display: inline-block;
  height: 50px;
  background: #0066dd;
  padding: 20px;
}

.color2 {
  background: #6600cc;
}

.button {
  font-size: 24px;
  color: #fff;
  padding: 10px;
  cursor: pointer;
  transition: all 0.8s ease;
  background-position: center;
}

.button:hover {
  background: rgba(255, 255, 255, 0.15) radial-gradient(circle, rgba(255, 255, 255, 0.15) 1%, transparent 1%) center/15000%;
}

.button:active {
  background-color: rgba(255, 255, 255, 0.5);
  background-size: 100%;
  transition: background 0s;
}

<divclass="background"><spanclass="button">Button 1</span></div><divclass="background color2"><spanclass="button">Button 2</span></div>