body {
  color: lightsteelblue;
  background-color: black;
  font-family: verdana;
}

h1 {
  color: whitesmoke;
  text-align: center;
  font-size: 200%;
}

h2 {
  font-size: 175%;
}

p {
  font-size: 150%;
}


/* unvisited link */
a:link {
  color: lightgray;
}

/* visited link */
a:visited {
  color: lightslategray;
}

/* mouse over link */
a:hover {
  color: lightcyan;
}

ul {
  list-style: none;
  /* Remove HTML bullets */
  padding: 0;
  margin: 0;
  font-size: 150%;
}

li { 
  margin-bottom: 20px;  
  text-align: center;
}

img {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

@media only screen and (max-width: 768px) {
  img {
    min-width: 90%;
  }
}