fix videos and imgs

static/js/SLClassroom.js

@@ -54,8 +54,6 @@ document.addEventListener("DOMContentLoaded", function () {
             "谢谢": "/static/videos/谢谢.mp4",
             "早上好": "/static/videos/早上好.mp4",
             "晚上好": "/static/videos/晚上好.mp4",
-            "对不起": "/static/videos/对不起.mp4",
-            "没关系": "/static/videos/没关系.mp4",
         };
 
         // 默认设置一次

templates/SLClassroom.html

@@ -171,9 +171,6 @@
                         <option value="早上好">早上好</option>
                         <option value="晚上好">晚上好</option>
                         <option value="谢谢">谢谢</option>
-                        <option value="对不起">对不起</option>
-                        <option value="没关系">没关系</option>
-                        <!-- 你可以继续添加其他手势选项 -->
                     </select>
                 </div>
 
@@ -344,7 +341,7 @@
             <div class="practice-container">
                 <div class="practice-card" onclick="flipCard(this)">
                     <div class="card-front">
-                        <img src="{% static 'images/sign_you.png' %}" alt="手语示例">
+                        <img src="{% static 'images/sign_you.jpg' %}" alt="手语示例">
                         <span>这个手势的含义是？</span>
                     </div>
                     <div class="card-back">
@@ -354,7 +351,7 @@
 
                 <div class="practice-card" onclick="flipCard(this)">
                     <div class="card-front">
-                        <img src="{% static 'images/sign_good.png'%}" alt="手语示例">
+                        <img src="{% static 'images/sign_good.jpg'%}" alt="手语示例">
                         <span>这个手势的含义是？</span>
                     </div>
                     <div class="card-back">
@@ -364,7 +361,7 @@
 
                 <div class="practice-card" onclick="flipCard(this)">
                     <div class="card-front">
-                        <img src="{% static 'images/sign_thank_you.png'%}" alt="手语示例">
+                        <img src="{% static 'images/sign_thank_you.jpg'%}" alt="手语示例">
                         <span>这个手势的含义是？</span>
                     </div>
                     <div class="card-back">