body {
  margin: 0;
  padding: 0;
  font-size: 100%;
}

h1, h2, h3, h4 {
  font-family: 'Roboto Slab', serif;
  color: #165582;
  padding: 10px;
}

h1, h2 {
  text-align: center;
}

h1 {
  font-size: 2.5em;
}

h2 {
  font-size: 1.75em;
}

h3 {
  font-size: 1.4em;
}

h4 {
  font-size: 1.2em;
}

p, li {
  font-family: 'Roboto', sans-serif;
  padding: 10px;
  max-width: 600px;
}

nav {
  font-family: 'Roboto', sans-serif;
  display: flex;
  flex-flow: row wrap;
  justify-content: flex-end;
  margin: auto;
  padding: auto;
}

nav a {
  /* display: block; */
  width: 200px;
  height: 20px;
  padding: 10px;
  margin: auto;
  margin-top: 5px;
  color: #000;
  /* padding: 8px 16px; */
  text-decoration: none;
  text-align: center;
  border: 1px solid #165582;
}

/* Change the link color on hover */
nav a:hover {
  background-color: #555;
  color: white;
}

a {
  text-decoration: none;
}

.container {
  display: flex;
  flex-flow: row wrap;  
}

.video {
  width: 50%;
}

iframe {
  width: 420px; 
  height: 315px;
}

.questions {
  width: 100%;
  margin: auto;
}

footer p {
  text-align: center;
}

/* Medium screens */
@media all and (max-width: 800px) {
  .navigation {
    /* When on medium sized screens, we center it by evenly distributing empty space around items */
    justify-content: space-around;
  }

  .video {
    width: 100%;
  }
}

/* Small screens */
@media all and (max-width: 500px) {
  .navigation {
    /* On small screens, we are no longer using row direction but column */
    flex-direction: column;
  }
}