body {
  font-size: 16px; /* Base font size */
}

h1 {
  font-size: 2.5em; /* 2.5 * 16 = 40px */
}

h2 {
  font-size: 1.875em; /* 1.875 * 16 = 30px */
}

p {
  font-size: 1.25em; /* 1 * 16 = 16px *//* TYPE YOUR OWN CSS HERE */