body {
  font-family: "Vazirmatn", Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
  direction: rtl;
}

nav {
  background-color: #333;
  color: #fff;
  padding: 1em;
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav ul {
  list-style: none;
  padding: 0;
}

nav ul li {
  display: inline;
  margin-right: 1em;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
}

section {
  padding: 2em;
}

h1 {
  color: #333;
}

#questions-container,
#quiz-container {
  margin-top: 1em;
}

.question {
  background-color: #fff;
  padding: 1em;
  margin-bottom: 1em;
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}