design: 퀴즈상세정보 카드 일부 디자인 변경

frontend/src/components/QuizForm/QuizDetailCard.jsx

@@ -30,7 +30,7 @@ export default function QuizCard({ index, question, answer, image, choices }) {
           className={styles.choiceDiv}
           key={idx}
         >
-          <label>{choice.num} </label>
+          <label className={styles.numLabel}>{choice.num} </label>
           <div className={`${styles.input} ${styles.choiceInput}`}>{choice.content}</div>
         </div>
       ))}

frontend/src/components/QuizForm/QuizDetailCard.module.css

@@ -59,6 +59,11 @@
   gap: 8px;
 }
 
+.numLabel {
+  width: 40px;
+  text-align: end;
+}
+
 .choiceInput {
   flex-grow: 1;
   padding: 7px;