body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #121212;
  color: #f0f0f0;
  line-height: 1.6;
  padding: 0 20px;
}

header {
  position: relative;
  text-align: center;
}

.banner {
  width: 100%;
  max-width: 1024px;
  height: auto;
  margin: 0 auto;
  display: block;
}

#langToggle {
  position: absolute;
  top: 10px;
  right: 10px;
  background-color: #333;
  color: #fff;
  border: none;
  padding: 8px 12px;
  cursor: pointer;
  border-radius: 4px;
}

main {
  max-width: 800px;
  margin: 40px auto;
}