refactor: 答题样式调整

src/components/swiper-limited-load/index.vue

@@ -287,6 +287,7 @@ export default {
         margin-right: 10rpx;
         font-size: 20rpx;
         border-radius: 50rpx;
+        border-radius: 50rpx 0 50rpx 50rpx;
       }
     }
     .content, .explain, .btn {

src/pages/learn/answer.vue

@@ -51,7 +51,12 @@
       <view class="u-flex u-row-around bottom">
         <view class="u-flex">
           <view class="c-list">
-            <u-icon name="grid" color="#5A6073" size="40"></u-icon>
+            <u-image
+              :src="allImg"
+              width="36"
+              height="36"
+              :lazy-load="false"
+            />
             <text>{{ currentNumber }}/{{ total }}</text>
           </view>
         </view>
@@ -197,6 +202,9 @@ export default {
       }
       return process.uniEnv.qn_base_url + name
     },
+    allImg() {
+      return process.uniEnv.qn_base_url + 'all.png'
+    },
     removeImg() {
       return process.uniEnv.qn_base_url + 'remove-error.png'
     },