I am not really sure if this is what you mean because the description is kind of vague, but I quickly made this:

button {
  background-color: #6A0DAD; 
  color: white;
  border: 2px solid white;
  border-radius: 30px;
  padding: 10px 20px;
  font-size: 20px;
  cursor: pointer;
  text-align: center;


  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.5), 0 0 10px white inset; 
  
  background-clip: padding-box;

  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

button:hover {
  background-color: #7E0DEB;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.6), 0 0 10px white inset;
}