body {
  background-color: black;
  color: limegreen;
  font-family: serif;
}

heading1 {
  color: white;
  font-size: 12px;
  font-family: serif;
}

#heading {
color: #FFF;
background-color: #232323;
font-size: 30px;
text-shadow: 0 0 5px #FFF, 0 0 10px #FFF, 0 0 15px #FFF, 0 0 20px #49ff18, 0 0 30px #49FF18, 0 0 40px #49FF18, 0 0 55px #49FF18, 0 0 75px #49ff18;
position: fixed;
top:35px;
left:20px
}

a {
  color:purple;
}

a:hover {
  color: blue;
  font-weight: bold;
}

.index {
  position: relative;
  top: 25%;
  left: 5%;
  color: limegreen;
  background-color: lightgray;
  font-family: serif;
}

.header {
    position: fixed;
    top: 2%;
    left: 2%;
    height: 300px;
}