fix

src/views/withMenu/Home/Banner/Banner.vue

 <template>
-  <van-swipe class="my-swipe" :autoplay="3000" indicator-color="white">
-    <van-swipe-item v-for="(image, index) in bannerUrls" :key="index">
-      <vantImage fit="cover" class="h-full w-full" :src="image" />
-    </van-swipe-item>
-  </van-swipe>
+  <div class="container relative">
+    <div class="absolute w-full h-full">
+      <van-swipe class="my-swipe" :autoplay="3000" indicator-color="white">
+        <van-swipe-item v-for="(image, index) in bannerUrls" :key="index">
+          <vantImage fit="cover" class="h-full w-full" :src="image" />
+        </van-swipe-item>
+      </van-swipe>
+    </div>
+  </div>
 </template>
 <script lang="ts">
 import { defineComponent, PropType } from "vue";
@@ -28,8 +32,12 @@ export default defineComponent({
 </script>
 
 <style scoped lang="less">
+.container {
+  padding-bottom: 40%;
+}
+
 .my-swipe {
-  height: 40vw;
+  height: 100%;
 }
 .my-swipe .van-swipe-item {
   color: #fff;