Flexbox is great for creating intricate layouts with more flexibility and less code. You might make a card grid that resizes to fit the screen or a responsive navigation bar.
Code Sample
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Flexbox Layout</title> <style> .nav-bar { display: flex; justify-content: space-between; list-style-type: none; padding: 0; background-color: #333; color: white; } .nav-item { padding: 14px 20px; } .main-content { display: flex; flex-wrap: wrap; padding: 20px; } .card { flex: 1 1 200px; margin: 10px; padding: 20px; background-color: #f9f9f9; box-shadow: 0 2px 5px 0 rgba(0,0,0,0.26); } </style> </head> <body> <ul class="nav-bar"> <li class="nav-item">Home</li> <li class="nav-item">About</li> <li class="nav-item">Services</li> <li class="nav-item">Contact</li> </ul> <div class="main-content"> <div class="card">Content 1</div> <div class="card">Content 2</div> <div class="card">Content 3</div> <div class="card">Content 4</div> </div> </body> </html> |
Explanation of code
HTML structure
CSS Styling
Flexbox is great for creating intricate layouts with more flexibility and less code. You might make a card grid that resizes to fit the screen or a responsive navigation bar.
Code Sample
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Flexbox Layout</title> <style> .nav-bar { display: flex; justify-content: space-between; list-style-type: none; padding: 0; background-color: #333; color: white; } .nav-item { padding: 14px 20px; } .main-content { display: flex; flex-wrap: wrap; padding: 20px; } .card { flex: 1 1 200px; margin: 10px; padding: 20px; background-color: #f9f9f9; box-shadow: 0 2px 5px 0 rgba(0,0,0,0.26); } </style> </head> <body> <ul class="nav-bar"> <li class="nav-item">Home</li> <li class="nav-item">About</li> <li class="nav-item">Services</li> <li class="nav-item">Contact</li> </ul> <div class="main-content"> <div class="card">Content 1</div> <div class="card">Content 2</div> <div class="card">Content 3</div> <div class="card">Content 4</div> </div> </body> </html> |
Explanation of code
HTML structure
CSS Styling
Content, padding, border, and margin make up the box model.
Relative moves from original position; absolute positions relative to nearest positioned ancestor.
id is unique; class can be reused.
Minify files, reduce specificity, and remove unused styles.
Overrides all other declarations, regardless of specificity.
Use margin: auto or flexbox/grid techniques.
Allow responsive design by applying styles based on screen size or device.
Define relationships between selectors: descendant ( ), child (>), adjacent (+), sibling (~).
Tools like SASS or LESS add features like variables and nesting to CSS.
Targets part of an element, like ::before or ::after.
Use @import "filename.css"; at the top of the file.
Controls stacking order of overlapping elements.
Forces a property to inherit value from parent.
Static — not affected by top, bottom, left, or right.
Use universal selector * or define styles in body/root.
em is relative to parent; rem is relative to root element.
Inline, internal (embedded), and external CSS.
A layout model for arranging elements in rows or columns with flexible sizing.
Targets elements in a specific state, like :hover or :nth-child().
Use fluid layouts, media queries, and relative units.
CSS styles HTML elements to control layout, color, fonts, and responsiveness.
Reusable custom property values, declared with --var-name.
Determines which rule applies when multiple rules target the same element.
Performs calculations to dynamically set CSS property values.
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