Fix 2 Maintainability issues in multiple files

[codefactor-io]

CodeFactor found multiple issues last seen at 78e5b1c:

Unexpected duplicate selector ".sidebar.sidebar--fixed.sidebar--toggleable:where(.sidebar.sidebar--fixed.sidebar--toggleable.sidebar.sidebar--fixed.sidebar--toggleable-all, .sidebar.sidebar--fixed.sidebar--toggleable.sidebar.sidebar--fixed.sidebar--toggleable-lg, .sidebar.sidebar--fixed.sidebar--toggleable.sidebar.sidebar--fixed.sidebar--toggleable-md, .sidebar.sidebar--fixed.sidebar--toggleable.sidebar.sidebar--fixed.sidebar--toggleable-sm)", first used at line 195 (no-duplicate-selectors)

• src\components\sidebar\Sidebar.vue:201

Unexpected duplicate selector ".page.page--expand:where(.page.page--expand.page.page--expand-all, .page.page--expand.page.page--expand-lg, .page.page--expand.page.page--expand-md, .page.page--expand.page.page--expand-sm)", first used at line 63 (no-duplicate-selectors)

• src\components\page\Page.vue:77