style.css

body {
  background-color: #252527;
}
p {
  text-align: center;
  color: rgb(206, 199, 199);
  font-size: 50px;
  font-family: sans-serif;
  -webkit-box-reflect: below 12px
    linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.2));
  position: relative;
  top: 10pc;
}
button {
  width: 200px;
  height: 50px;
  border-radius: 15px;
  position: relative;
  top: 6pc;
  left: 25pc;
  border: none;
  background-color: cyan;
  font-size: 25px;
  font-family: sans-serif;
  font-weight: bold;
  color: yellow;
  box-shadow: 0px 0px 100px lime;
  transition: 1s;
}
button:hover {
  box-shadow: 0px 0px 100px skyblue;
}