body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}
h1 {
  text-align: center;
  color: #2c3e50;
}
.question {
  margin-bottom: 20px;
  background-color: #f9f9f9;
  padding: 15px;
  border-radius: 5px;
}
.options {
  margin-top: 10px;
}
.option {
  margin-bottom: 5px;
}
button {
  display: block;
  width: 100%;
  padding: 10px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 20px;
}
button:hover {
  background-color: #2980b9;
}
#result {
  margin-top: 20px;
  display: none;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}
th,
td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: left;
}
th {
  background-color: #f2f2f2;
}
.correct {
  color: green;
}
.incorrect {
  color: red;
}