body {
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.6;
  padding: 0px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  background: darkblue;
  color: white;
}

#menu-btn {
  font-size: 24px;
  background: none;
  border: 100px;
  color: white;
  cursor: pointer;
}

nav {
  display: none;
  flex-direction: column;
  background: #eee;
}

nav.shown {
  display: flex;
}

nav a {
  padding: 10px;
  text-decoration: none;
  color: darkblue;
  border-bottom: 1px solid #ccc;
}

main {
  padding: 15px;
}

footer {
  text-align: center;
  padding: 10px;
  background: darkblue;
  color: white;
  margin-top: 115px;
}

img {
  width: 100%;
  height: auto;
  object-fit: contain;
}