:root {
  --primary: #000080;
  --secondary: #4683b7;
  --tertiary: #ffce3f;
}

body {
  display: flex;
  flex-direction: column;
  font-size: 1.25rem;
  font-family: "Poppins", sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  min-width: 80vw;
  margin: 0;
}

header,
footer,
main {
  padding: 8px;
}

header,
footer {
  flex-grow: 0;
  flex-shrink: 0;
}

header {
  display: block;
  border-bottom: 4px solid var(--secondary);
  background-color: var(--primary);
}

main {
  flex-grow: 1;
}

footer {
  text-align: right;
  font-size: 1rem;
  border-top: 2px solid var(--tertiary);
}

header h1 {
  font-size: 2em;
  margin: 0 10px;
  color: white;
}

nav {
  display: flex;
  flex-flow: row wrap;
  gap: 10px;
  padding: 0;
  align-self: center;
  min-width: 40%;
}

nav a {
  list-style-type: none;
  border-top: 1px solid grey;
  border-left: 1px solid grey;
  border-right: 2px solid grey;
  border-bottom: 2px solid grey;
  border-radius: 8px;
  flex: 1;
  color: grey;
  text-decoration: none;
  padding: 0 5px;
}

nav a:hover {
  border-color: white;
  color: white;
}

main h1 {
  color: var(--primary);
  align-self: center;
  padding: 0 20px;
  margin: 0 auto;
  width: fit-content;
  border-bottom: 2px solid var(--secondary);
  margin-bottom: 20px;
}

@media (min-width: 800px) {
  header {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
  }
}