更新 备案样式

src/views/index/Login.vue

@@ -267,9 +267,9 @@ export default {
 
 .copyright {
   position: absolute;
-  width: 520px;
+  width: 100vw;
   bottom: 70px;
-  left: calc(50% - 250px);
+  text-align: center;
   font-family: PingFang SC;
   font-weight: 400;
   color: #aaa;