<div class="button">HOVER ME</div>
body {
  display: flex;
  height:100vh;
  align-items: center;
  justify-content: center;
  background-color: black;
}

.button {
  color: #db3eb1;
  border: 6px solid #db3eb1;
  border-radius:15px;
  padding: 15px 25px;
  font-size: 30px;
  font-family: tahoma;
  letter-spacing:5px;
  cursor: pointer;
  font-weight: bold;
  filter: drop-shadow(0 0 15px #db3eb1) drop-shadow(0 0 50px #db3eb1) contrast(2) brightness(2);
  transition: .5s;
}

.button:hover {
  color: black;
  background-color: #db3eb1;
  filter: drop-shadow(0 0 20px #db3eb1) contrast(2) brightness(2);
}

Run Pen

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.