Flexbox Centering - CSS Typing CST Test
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Flexbox Centering — CSS Code
Centers content horizontally and vertically using Flexbox.
body, html {
height: 100%;
margin: 0;
}
.container {
display: flex;
justify-content: center;
align-items: center;
height: 100%;
background: #f0f0f0;
}
.box {
width: 200px;
height: 200px;
background: #007bff;
color: white;
display: flex;
justify-content: center;
align-items: center;
border-radius: 8px;
}CSS Language Guide
CSS (Cascading Style Sheets) is a stylesheet language used to describe the presentation of HTML documents. It controls layout, colors, fonts, spacing, and visual effects, separating content structure from design.
Primary Use Cases
- ▸Styling web pages and HTML elements
- ▸Responsive design for multiple screen sizes
- ▸Creating layouts using Flexbox and Grid
- ▸Applying animations and transitions
- ▸Theme management and branding for websites
Notable Features
- ▸Selectors and combinators to target elements
- ▸Box model controlling margins, borders, padding, and content
- ▸Media queries for responsive design
- ▸Pseudo-classes and pseudo-elements for advanced styling
- ▸Support for transitions, animations, and transformations
Origin & Creator
Developed by Håkon Wium Lie in 1994 while working with Tim Berners-Lee at CERN.
Industrial Note
CSS is specialized for visual presentation and layout rather than content creation or logic processing.