header {
  padding: 0.5rem;
  display: flex;
  justify-content: space-between;
  background: paleturquoise;
  align-items: center;
}

.logo {
  font-family: 'Arial', sans-serif;
  font-size: 2rem;
  font-weight: bold;
  color: #007bff;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

a {
  display: block;
}

.btn {
  background-color: #007bff;
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0.2rem;
  text-decoration: none;
  font-weight: bold;
  letter-spacing: 1px;
  border: none;
  line-height: normal;
  cursor: pointer;
  font-size: 1rem;
}

.btn:hover {
  filter: opacity(0.8);
}

.navbar.header {
  font-weight: bold;
  font-size: 1.5rem;
}


nav {
  background: pink;
  padding: 0.5rem 1rem;
}

main {
  background: palevioletred;
  padding: 0.5rem 1rem;
}

footer {
  background: palegreen;
  display: flex;
  justify-content: center;
  align-items: center;

  color: rgba(0, 0, 0, 0.5);
}

code {
  word-break: break-all;
}