body {
  font-family: 'Arial', sans-serif;
}

.content {
  max-width: 720px;
  margin: 0 auto;
  border-top: 8px solid #000;
}

h1 {
  font-size: 50px;
  font-weight: bold;
  margin: 20px 0px 0px 20px;
}

h2 {
  font-size: 20px;
  font-weight: bold;
  margin: 5px 0px 10px 20px;
  color: #999;
}

h3 {
  font-size: 20px;
  font-weight: bold;
  margin: 10px 0px 10px 0px;
}

h4 {
  font-size: 30px;
  font-weight: bold;
  margin: 10px 0px 10px 0px;
}
h5 {
  font-size: 30px;
  font-weight: bold;
  margin: 800px 100px 800px 100px;
}
.table-of-contents {
  text-align: center;
  margin: 40px;
}

.table-of-contents2 {
  text-align: center;
  margin: 5px;
}


.chapter {
  text-align: center;
}

.chapter-image {
  margin-right: 20px;
  margin-bottom: 20px;
}

.chapter-body {
  text-align: left;
  display: inline-block;
  vertical-align: top;
  width: 700px;
}

p {
  font-size: 16px;
  line-height: 20px;
  margin-bottom: 20px;
}