body {
  background: #fdfdfd;        /* metallic ghost white */
  color: #111;
  font-family: Arial, sans-serif;
  text-align: center;         /* everything centered */
  margin: 0;
  padding: 20px;
}

h1 {
  color: red;
  font-size: 32px;
  margin: 20px 0;
}

h2 {
  color: darkred;
  font-size: 26px;
  margin: 18px 0;
}

h3 {
  color: darkred;
  font-size: 22px;
  margin: 15px 0;
}

p {
  font-size: 18px;
  line-height: 1.6;
  margin: 10px auto;
  max-width: 700px;           /* keeps text from stretching too wide */
}

ul, ol {
  display: inline-block;      /* keeps lists centered */
  text-align: left;           /* but align list text left for readability */
  margin: 15px auto;
  font-size: 18px;
  line-height: 1.6;
}

li {
  margin-bottom: 5px;
}

img {
  display: block;
  margin: 15px auto;
  max-width: 80%;
  height: auto;
}

hr {
  border: none;
  border-top: 2px solid #aaa;
  width: 60%;
  margin: 25px auto;
}