ميدياويكي:Gadget-Font-Arial.css

html,
body,
#content h1,
#content h2,
#content #firstHeading,
.mw-body .mw-editsection,
.mw-body .mw-editsection-like,
.ui-widget,
.mw-body #toc h2,
.mw-body .toc h2,
.flow-topic-title,
h2.flow-board-header-title,
.mw-collapsible-toggle,
.mw-collapsible-toggle > a,
.CategoryTreeToggle,
.CategoryTreeEmptyBullet,
.NavToggle {
  font-family: Arial;
}