<a href="#">about us</a>

html,
body {
  height: 100%;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

a {
  text-decoration: none;
  color: green;
  font-size: 40px;
  text-transform: uppercase;
  font-weight: 700;
  border: 2px solid green;
  padding: 10px 20px;
  box-shadow: 0 0 20px green, 0 0 20px green inset;
  text-shadow: 0 0 20px green;
  border-radius: 10px;
}