body {
  margin:0;padding:0;
  background: white;
  max-width: 100%;
  font-family: Helvetica,sans-serif;
}

h1 {
  color: black;
  text-align: center;
  font-size: 2rem;
  font-weight: 500;
  text-shadow: 1px 1px #ccc;
}
h2, h3, h4, h5, h6 {
  font-weight: 300;
}
h2 { font-size: 1.3rem;}
h3 { font-size: 1.1rem;}
ul, ul li {
  display: block;
  margin: 0; padding: 0;
}

a, a:visited, a:hover, a:focus {
  color: #4184F3;
  background: transparent;
}
a, a:visited {
  text-decoration: none;
}
a:hover, a:focus {
  text-decoration: underline;
}

/*** header ***/
header {
  background: #005A9C;
  color: white;
  margin: 0;
}
header ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}
header a, header a:visited {
  border-bottom: 1px solid #005A9C;
  display: block;
  color: white;
  text-decoration: none;
  font-weight: bold;
  padding: 0.5rem;
}
header a:hover, header a:focus {
  background: white;
  color: black;
  text-decoration: none;
  font-weight: bold;
}

/*** main ***/
main {
  display: flex;
  flex-flow: column;
  background: white;
  color: black;
  line-height: 1.2;
  margin-left: 1rem;
  margin-right: 1rem;
}

main > * {
  padding-right: 0;
  padding-left: 0;
}

main nav {
  order: 1;
  margin-top: 1rem;
  margin-bottom: 1rem;
  padding-top: 0.5ex;
  padding-bottom: 0.5ex;
  border-top: 2px solid #ccc;
}
main nav h3 {
  padding-bottom: 0.2ex;
  border-bottom: 3px solid #eee;
}
main nav li {
  font-weight: 500;
  padding: 0.5ex;
  border-bottom: 1px solid #ccc;
}

aside {
  margin-top: 1rem;
  margin-bottom: 1rem;
  border-top: 2px solid #ddd;
}

figcaption {
  text-align: left; font-style: italic; font-size: small;
}
#mission {
  font-style: italic;
  margin-bottom: 1rem;
  border-bottom: 1px solid #ccc;
}

#mission p {
  margin-left: 1rem;
  margin-right: 1rem;
}

article {
  margin-top: 1rem;
  border-top: 2px solid #ddd;
}

article h3 {
  padding-top: 0.5ex; margin: 0;
  width: 100%;
}

/*** footer ***/

footer {
  background: #005A9C;
  color: white;
  margin: 0;
  padding-right: 0.5rem;
  padding-left: 0.5rem;
  padding-top: 0.5rem;
  padding-bottom: 1rem;
  text-align: left;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
}
footer p { margin: 0; padding: 0;}
footer a, footer a:visited, footer a:focus, footer a:hover {
  color: white;
  font-weight: bold;
}

@media screen and (min-width: 78rem) {
  main {
    flex-flow: row;
    justify-content: space-around;
    align-items: flex-start;
  }
  main > * {
    padding-right: 1rem;
    padding-left: 1rem;
  }
  main nav {
    order: 0;
    border-top: none;
    border-right: 1px solid #ccc;
  }
  main nav h3 {
    text-align: right;
  }
  main #content {
    max-width: 50rem;
  }
  aside {
    max-width: 20em;
    border-top: none;
    border-left: 1px solid #ccc;
  }
  article {
    margin-top: 2rem;
    border-top: 0.5ex solid #ddd;
  }
  footer {
    box-sizing: border-box;
    width: 100%;
    margin-top: 5rem;
    padding-bottom: 2rem;
  }
}