body {
  font-family: Arial;
  background: #f2f2f2;
  text-align: center;
}

h1 {
  color: #333;
}

.box {
  margin: 20px;
}

select, input, button {
  padding: 8px;
  margin: 5px;
}

#quiz {
  width: 70%;
  margin: auto;
  text-align: left;
}

.question {
  background: white;
  padding: 15px;
  margin: 15px 0;
  border-radius: 8px;
}

#submitBtn {
  margin: 20px;
  padding: 10px 20px;
  font-size: 16px;
}

#result {
  color: green;
  font-size: 22px;
}