h1 {
  padding: 40px 20px;   /* vertical / horizontal */
  border: 1px solid red; /* size / style / color */
}

p {
  padding: 20px 0px 20px 10px; /* clockwise: top / right / bottom / left */
  margin-top: 25px;
  margin-bottom: 50px;
}

em, strong {
  background-color: #B2D6FF;
  display: inline;
  margin: 20px;
}