CSS

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CSS: Styling and responsiveness for modern web interfaces

CSS (Cascading Style Sheets) is the fundamental technology for the visual presentation of web pages. While HTML defines the structure, CSS determines the appearance—colors, layout, animations, and cross-device adaptation. Thanks to its flexibility and power, CSS has become an integral part of every professional website.

Key features of CSS

CSS works with selectors that determine which HTML elements the styling rules should be applied to. Declarations then define the specific appearance: color, size, margins, font, background, layout using Flexbox or Grid, and more. In addition to basic styling, CSS allows you to create transitions, animations, hover effects, and state changes. Media queries make it easy to create responsive designs tailored to mobile phones, tablets, and desktops. CSS also supports variables, functions such as clamp(), calc(), and modularity via preprocessors (SASS, LESS).

The benefits of CSS in practice

CSS separates content from presentation, which greatly simplifies the management of large websites. For developers, this means better organization and reusability of styles. For companies, it ensures a consistent visual identity across the entire website and a professional impression for visitors. CSS increases website accessibility, optimizes the user experience, and contributes to higher conversion rates thanks to its clear and visually appealing design.

Use Cases of CSS

CSS is used to create layouts, responsive design, dark modes, transition animations, interactive components, and web application styling (e.g., using frameworks such as Tailwind CSS and Bootstrap). It is a key tool in the creation of design systems and component libraries. Combined with HTML and JavaScript, it forms the cornerstone of the front end of modern web development.

CSS is not just about colors and fonts—it is a powerful tool for creating accessible, responsive, and aesthetically balanced web environments. In the hands of an experienced developer, it transforms static content into an intuitive, lively, and professional experience.

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Where have we used CSS?

Take a look at the examples

PSA Group/Emil Frey

Car Sales and Management Software

We created a web application which PSA Group employees can run on their laptop or use a responsive version on their tablets or telephones after they sign in. The original application lacked the necessary information. Since the customer wants to focus more on the sale of used cars, he needs a well-organized application with the current status, technical data, and availability.

Nemlog

Hospital Storage System

Three developers built the system while one of them was focusing on the mobile version. The application consists of three parts and requests from the web or mobile clients are processed in the back-end by a programmed API. Currently, all data is stored in the Microsoft cloud system. The new application is specifically designed for hospital staff and warehouse managers because drivers and other employees use a different system. We have installed the mobile version on handheld scanners that use the Android operating system. After scanning the barcode, the scanner connects to the warehouse database immediately and all important data are exchanged.

Polycon

Production Management Software

We designed and developed a production management software that tracks every order from beginning to end. The application aggregates all data for each specific order online and allows for easy access. Workers, managers and even clients now have a better overview that is always up to date. The software works in multiple interconnected modules. Project Administration module presents all order information including status tracking, documentation, and history. In Samples module, users browse, specify their needs and request custom samples. Calculation functionality facilitates custom pricing and serves as an asset both for sales and production teams. The most important module is called Production and serves for planning and managing the manufacturing process.