答题最大宽度设为1200

src/views/exercise_questions/answer/index.vue

@@ -26,15 +26,17 @@
 
       <AnswerReport v-else-if="isSubmit" :record-report="recordReport" @selectQuestion="selectQuestion" />
 
-      <template v-for="({ id }, i) in questionList" v-else>
-        <component
-          :is="curQuestionPage"
-          v-if="i === curQuestionIndex"
-          :key="id"
-          ref="exercise"
-          :data="currentQuestion"
-        />
-      </template>
+      <div v-else class="answer-container">
+        <template v-for="({ id }, i) in questionList">
+          <component
+            :is="curQuestionPage"
+            v-if="i === curQuestionIndex"
+            :key="id"
+            ref="exercise"
+            :data="currentQuestion"
+          />
+        </template>
+      </div>
     </main>
 
     <footer class="footer">
@@ -504,6 +506,12 @@ export default {
 
   .main {
     flex: 1;
+
+    .answer-container {
+      width: 100%;
+      max-width: 1200px;
+      margin: 0 auto;
+    }
   }
 
   .footer {