在左右布局站点中，使用布局组件时，布局菜单下的子菜单设置为左侧时，页面css样式不对齐；设置为顶部时，也默认是左侧

整体看，在左右布局场景下，使用布局组件的问题比较多，无法使用起来

Start with the issue description and screenshots, then reproduce the layout-component behavior in a site using a left-right layout. Check the submenu alignment when configured for the left side and whether the top setting incorrectly defaults to the left; done means both settings render in their selected positions with correct CSS alignment.

Written by the indexing model from the issue text.