.heading, .footer {
  background-color: #003949;
  color: #eee;
}

.heading {
  margin-bottom: 20px;
}

.footer {
  padding: 10px 0 0;
  margin-top: 20px;
  height: 100px;
}

@media screen and (min-height: 500px) {
  .footer {
      position: fixed;
      width: 100%;
      bottom: 0;
  }

  body {
    margin-bottom: 120px;
  }
}

.footer a {
  text-decoration: underline;
  color: inherit;
}

.heading h1, .heading h3 {
  text-align: center;
  font-family: 'Nunito', sans-serif;
}

.heading h1 {
    font-size: 4.2em;
    margin-bottom: 0;
}
.heading h3 {
  margin-top: 0;
}

@media screen and (max-width: 500px) {
    .heading h1 {
        font-size: 3em;
    }
}

@media screen and (max-width: 350px) {
    .heading h1 {
        font-size: 2.2em;
    }
}

img {
  max-width: 100%;
  margin: 10px 0;
}