What Is CSS?
CSS (Cascading Style Sheets) is the language that styles web pages. HTML says what each piece of content is; CSS decides how it looks and where it sits: colors, fonts, spacing, layout and transitions. Håkon Wium Lie proposed it in 1994, and its first level became a W3C Recommendation in 1996. Today the CSS Working Group at the W3C develops it, with the browser makers taking part.
A style sheet is a list of rules: a selector picks the elements, and declarations set their properties. “Cascading” refers to the clear order that decides which rule wins when several apply to the same element. Flexbox and grid arrange content in rows, columns and areas; media queries and container queries adapt a layout to the screen or to the space a component has; custom properties, also called CSS variables, keep a design system's colors and sizes in one place.
You won't find a single “CSS3” or “CSS4” specification: CSS 2.1 was the last version written as one document, and since then the language has grown as separate modules, such as Selectors, Grid or Color, each advancing at its own pace. CSS is an open standard, free to use and supported by every browser. Recent additions such as container queries and the :has() selector now handle jobs that used to need JavaScript.
Where We Use CSS
Every site we build is styled with CSS written for that brand, not borrowed from a heavy ready-made theme. We rely on it most for:
Layouts for Every Screen
With grid, flexbox and container queries, each section rearranges itself sensibly from a narrow phone to a wide monitor, without separate mobile and desktop versions to maintain.
Your Design System in Code
Colors, type sizes and spacing from your Figma design become custom properties. One change in one place updates the whole site, and every page stays consistent with your brand.
Light and Dark Modes
We can follow the visitor's device setting with the prefers-color-scheme media query and add a switch if you want one. Both color sets use the same variables, so text stays readable in each.
Right-to-Left Arabic
Logical properties describe spacing and alignment as “start” and “end” instead of left and right, so the Arabic version mirrors itself correctly from the same style sheet.
Why CSS?
Less JavaScript, Faster Pages
Modern CSS handles layout, transitions and many interactive states by itself. Every script we don't need is one less file for the browser to download and run, so pages respond quickly on phones too.
Consistency That Lasts
Styles live in one place and follow your design system, so new pages and later updates look like part of the same brand.
Comfort and Accessibility
We size text in relative units so it grows with the visitor's browser settings, keep focus outlines visible for keyboard users and respect the “reduce motion” preference.
How We Work on Your Project
We start from the design approved in Figma: colors, the type scale, spacing and components first become variables and shared styles. Then we build each layout mobile first, adding wider screens, the right-to-left Arabic version and dark mode as we go, and check every component in each of its states.
Before launch we test on real phones and in Safari, Chrome and Firefox, check color contrast and keyboard focus, and remove unused styles. We measure speed and layout stability with PageSpeed Insights and Lighthouse, so nothing jumps around while the page loads.
