html,
body {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 0;
  --primary-color: #3498db;
}

body {
  color: #333;
  margin: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  background-color: var(--primary-color);
}

a {
  color: rgb(0, 100, 200);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}