body {
  font-family: Arial, sans-serif;
  font-size: 16px;
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
  color: #333;
}

header {
  text-align: center;
  padding: 20px;
  background-image: linear-gradient(to right, #191d21, #21252b);
  color: #fff;
}

nav {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

nav a {
  color: #fff;
  text-decoration: none;
  padding: 10px 20px;
  font-weight: bold;
  transition: all 0.3s ease-in-out;
}

footer {
  text-align: center;
  padding: 20px;
  background-color: #21252b;
  color: #fff;
}

nav a:hover {
  color: #facc15;
  transform: translateY(-2px);
}

h1 {
  font-size: 3em;
  margin-bottom: 10px;
  color: #facc15;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

main {
  max-width: 800px;
  margin: 0 auto;
}


@media only screen and (max-width: 768px) {
  body {
    padding: 10px;
  }

  nav {
    flex-direction: column;
    align-items: center;
  }

  nav a {
    padding: 5px 10px;
  }

  h1 {
    font-size: 1.5em;
  }

  img {
    width: 100%;
  }