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About

CSS, short for Cascading Style Sheets, is a style sheet language used by web developers to structure the HTML and other elements of a website. CSS is one of the most widely used languages on the web. For style sheets to work, it is important that your markup be free of errors. A convenient way to automatically fix markup errors is to use the HTML Tidy utility. This also tidies the markup making it easier to read and easier to edit. I recommend you regularly run Tidy over any markup you are editing. Tidy is very effective at cleaning up markup created by authoring tools with sloppy habits. Each style property starts with the property's name, then a colon and lastly the value for this property. When there is more than one style property in the list, you need to use a semicolon between each of them to delimit one property from the next.

About

Rio is an open source Python framework that enables developers to build modern web and desktop applications entirely in Python. Inspired by frameworks like React and Flutter, Rio introduces a declarative UI model where components are defined as Python data classes with a build() method, allowing for reactive state management and seamless UI updates. It includes over 50 built-in components adhering to Google's Material Design, facilitating the creation of professional-grade interfaces. Rio's layout system is Pythonic and intuitive, calculating each component's natural size before distributing available space, eliminating the need for traditional CSS. Developers can run applications locally or in the browser with the backend powered by FastAPI and communication handled via WebSockets.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Web developers

Audience

Anyone searching for a solution to build full-stack web and desktop applications

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

Free
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

CSS
Founded: 1996
www.w3schools.com/css/

Company Information

Rio
Founded: 2024
Germany
rio.dev/

Alternatives

Alternatives

Reflex

Reflex

Pynecone
XAML

XAML

Microsoft
Effie

Effie

7S2P Inc.
Solara

Solara

Widgetti BV

Categories

Categories

Integrations

AppCode Supported
AskCodi Supported
Claude Opus 5 Supported
Codestral Supported
CoffeeCup HTML Editor Supported
Cosine Supported
DeepSeek-Coder-V2 Supported
DeepSeek-V4 Supported
FigCraft Supported
Gemini 3 Flash Supported
Gemini 3 Pro Supported
Gemini 3.5 Flash-Lite Supported
Gemini 3.7 Flash Supported
Mixtral 8x7B Supported
PegasusCRM Supported
Pencil Supported
UseScraper Supported
WiserReview Supported
Zerocheck Supported

Integrations

AppCode Not Supported
AskCodi Not Supported
Claude Opus 5 Not Supported
Codestral Not Supported
CoffeeCup HTML Editor Not Supported
Cosine Not Supported
DeepSeek-Coder-V2 Not Supported
DeepSeek-V4 Not Supported
FigCraft Not Supported
Gemini 3 Flash Not Supported
Gemini 3 Pro Not Supported
Gemini 3.5 Flash-Lite Not Supported
Gemini 3.7 Flash Not Supported
Mixtral 8x7B Not Supported
PegasusCRM Not Supported
Pencil Not Supported
UseScraper Not Supported
WiserReview Not Supported
Zerocheck Not Supported
Claim CSS and update features and information
Claim CSS and update features and information
Claim Rio and update features and information
Claim Rio and update features and information