body {
  font-family: sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: #f0f0f0;
  background-image: url("https://alittlemoreenglish.weebly.com/uploads/2/6/6/3/26638990/untitled-design-6_orig.png");
  background-size: cover;
  background-position: center;
}

.container {
  background-color: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.15);
  text-align: center;
  width: 800px;
  max-width: 95%;
}

#flag-container {
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

#flag-image {
  width: 200px;
  height: 150px;
  border: 1px solid #ccc;
  object-fit: contain;
  max-width: 100%;
  max-height: 100%;
}

#options-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.option-button {
  padding: 10px 20px;
  border: none;
  background-color: #007bff;
  color: white;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.option-button:hover {
  background-color: #0056b3;
}

#message {
  margin-bottom: 10px;
  font-weight: bold;
}

#next-button {
  padding: 10px 20px;
  border: none;
  background-color: #28a745;
  color: white;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
  margin: 0 auto;
  display: block;
}

#next-button:hover {
  background-color: #1e7e34;
}

#score {
  margin-top: 20px;
  font-size: 1.2em;
}

#timer {
  margin-top: 10px;
  font-size: 1.2em;
}

#start-page {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#category-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
  margin-top: 20px;
}

.category-button {
  padding: 15px 25px;
  border: none;
  background-color: #6c757d;
  color: white;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.category-button:hover {
  background-color: #545b62;
}

#quiz-page {
  display: none;
}

#result-page {
  display: none;
}