* {
  text-align: center;
  margin: 0px;
  padding: 0px;
}
button {
  padding: 100px;
  background-color: blueviolet;
  padding: 200px;
  color: white;
  font-size: 75px;
  margin: o;
}
button:hover,
button:focus {
  outline: none;
  box-shadow: none;
}