fix:修改登录框在页面过分小时的样式错乱

@@ -51,9 +51,9 @@ export default {
   position: relative;
   position: relative;
   .login-card {
   .login-card {
     position: absolute;
     position: absolute;
-    top: 195px;
-    bottom: 195px;
     right: 188px;
     right: 188px;
+    top: 50%;
+    transform: translateY(-50%);
   }
   }
 }
 }
 </style>
 </style>