fix #I8550V https://gitee.com/dromara/RuoYi-Vue-Plus/issues/I8550V

ahao

2023-09-29 fe384a3020fd2080d843704537b77954a8d82707

 src/layout/index.vue

@@ -107,6 +107,7 @@
  z-index: 9;
  width: calc(100% - #{$base-sidebar-width});
  transition: width 0.28s;
  background: $fixed-header-bg;
}

.hideSidebar .fixed-header {