替换登录页的背景视频

src/views/Login.vue

@@ -84,11 +84,11 @@ export default {
 }
 .bg-video {
   position: absolute;
-  top: 0;
+  top: 50%;
   left: 50%;
-  transform: translateX(-50%);
+  transform: translate(-50%, -50%);
   width: 100%;
-  height: 120%;
+  height: 100%;
   object-fit: cover;
   z-index: 1;
 }