Todo es posible
Añade nuevas funciones o conecta tus herramientas favoritas con miles de plugins: disponibles en todos los planes de pago de WordPress.com.
css-version
310 plugins
Simple Custom CSS and JSAñade fácilmente código personalizado CSS o JS a tu web con un fantástico editor.
Jetpack Boost - Website Speed, Performance and Critical CSSAcelera tu sitio de WordPress con optimizaciones de un solo clic como el caché de página, el CSS crítico y el CDN de imágenes para mejorar los Core Web Vitals.- ¿Por qué este plugin no es compatible con WordPress.com?
WP Downgrade | Specific Core VersionAutomáticamente, vuelve a una versión anterior o actualiza a cualquier versión de WP que quieras, directamente desde la administración. 
SiteOrigin CSSPowerful, simple CSS editing for WordPress. Visual controls & real-time previews for effortless site customization.
Simple Custom CSS PluginAdd Custom CSS to your WordPress site without any hassles.
Blocks Animation: CSS Animations for Gutenberg BlocksBlocks Animation te permite añadir animaciones CSS a todos tus bloques de Gutenberg de la manera más elegante.
Widget CSS ClassesAdd custom classes and ids plus first, last, even, odd, and numbered classes to your widgets.
Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDNOptimize PageSpeed Performance & Core Web Vitals, Advanced Cache, Minify CSS & JavaScript, Inline Critical CSS, Defer CSS & JS, Smush & Lazy Load, CDN
Simple CSSAdd CSS to your website through an admin editor, the Customizer or a metabox for page/post specific CSS.
WP Add Custom CSSAdd custom css to the whole website and to specific posts and pages.
Woody Code Snippets – Insert PHP, CSS, JS, and Header/Footer ScriptsInsertar encabezados y pies de página, ejecuta código PHP, usa lógica condicional para insertar anuncios, texto, contenido multimedia y código de servicio externo.
Visual CSS Style EditorStyle your WordPress site visually. Discover the most popular front-end design plugin! Try live demo.
Debloat - Remove Unused CSS, Optimize JSRemove Unused CSS, Optimize CSS, Optimize JS and speed up your site.
Display PHP VersionDisplays the currently installed PHP/MySQL version in the "At a Glance" admin dashboard widget.
Version Info - Server Health Monitor, PHP & MySQL Version Display, Environment IndicatorsThe #1 technical dashboard for WordPress professionals. Display PHP, MySQL, WP & server versions anywhere in admin. Monitor CPU, RAM, DB size & …
Custom CSS and JavaScriptEasily add custom CSS and JavaScript code to your WordPress site, with draft previewing, revisions, and minification!
Microthemer Lite - Visual Editor to Customize CSSA visual editor to customize the CSS styling of anything on your site - from Google fonts to responsive layouts.
Meta Generator and Version Info RemoverThis plugin will remove the version info appended to enqueued style and script urls along with Meta Generator in the head section and in RSS feeds.
Admin CSS MUAdd custom CSS to style the WordPress Admin. Works with Multisites.
Add Admin CSSEasily define additional CSS (inline and/or by URL) to be added to all administration pages.