body {
  font-family: "Georgia", "Times New Roman", serif;
  margin: 0;
  line-height: 1.6;
  background: #fff;
  color: #000;
  position: relative;
}

nav {
  background: #f5f5f5;
  border-bottom: 2px solid #ddd;
  padding: 10px 15px;
  position: relative;
}

.menu-toggle {
  display: block;
  font-size: 24px;
  background: none;
  border: none;
  cursor: pointer;
  position: absolute;
  top: 10px;
  right: 15px;
}

nav ul {
  list-style: none;
  margin: 50px 0 0 0;
  padding: 0;
  display: none;
  position: relative;
}

nav ul.open {
  display: block;
}

nav ul li {
  margin-bottom: 10px;
}

nav a {
  text-decoration: none;
  font-weight: bold;
  color: #000;
  font-size: 14px;
}

nav a:hover {
  color: #c00;
}

header {
  position: relative;
  padding: 20px 10px;
}

header h1 {
  font-size: 1.2rem;
  line-height: 1.3;
  margin: 0 0 15px 0;
}

.sub li {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 8px;
}

.header-img {
  width: 95%;
  display: block;
  margin: 15px auto;
  position: relative;
}

main {
  max-width: 100%;
  padding: 0 10px;
  position: relative;
}

article p {
  font-size: 1rem;
  margin-bottom: 15px;
  position: relative;
}

.article-img {
  width: 95%;
  display: block;
  margin: 15px auto;
  position: relative;
}

section {
  margin-top: 20px;
  padding: 15px;
  background: #f8f8f8;
  border: 1px solid #ddd;
  position: relative;
}

section h2 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

form label {
  display: block;
  margin-top: 8px;
  font-weight: bold;
  font-size: 14px;
}

form input {
  width: 100%;
  padding: 6px;
  margin-top: 4px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

form button {
  margin-top: 12px;
  padding: 10px 18px;
  border: none;
  background: #c00;
  color: white;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
}

form button:hover {
  background: #900;
}

footer {
  margin-top: 30px;
  padding: 15px;
  font-size: 12px;
  text-align: center;
  background: #f5f5f5;
  border-top: 1px solid #ddd;
  position: relative;
}

footer a {
  color: #c00;
}

/* Tablet */
@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }

  nav ul {
    display: block;
    margin: 0;
    position: relative;
  }

  nav ul li {
    display: inline-block;
    margin-right: 20px;
  }

  header h1 {
    font-size: 1.8rem;
    margin: 20px 0;
  }

  article p {
    font-size: 1.1rem;
  }

  main {
    max-width: 700px;
    margin: 0 auto;
  }

  .header-img, .article-img {
    width: 90%;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  header h1 {
    font-size: 2.4rem;
    margin-left: 20px;
  }

  article p {
    font-size: 1.2rem;
  }

  .header-img, .article-img {
    width: 80%;
    margin: 20px auto;
  }

  main {
    max-width: 1000px;
    margin: 0 auto;
  }
}