antora/supplemental-ui/partials/head-meta.hbs (7 lines of code) (raw):
<link rel="icon" href="{{{uiRootPath}}}/img/favicon.ico" type="image/x-icon">
<link rel="stylesheet" href="{{uiRootPath}}/css/search.css">
<link rel="stylesheet" href="{{uiRootPath}}/css/menu.css">
<link rel="stylesheet" href="{{uiRootPath}}/css/tabs.css">
<link rel="stylesheet" href="{{uiRootPath}}/css/navbar.css">
<link rel="stylesheet" href="{{uiRootPath}}/css/custom.css">
<link rel="stylesheet" href="{{uiRootPath}}/css/home.css">