In CSS Grid you have the ability to define the layout of the grid using properties, like grid template columns and grid template rows. These properties enable you to specify the number and dimensions of rows and columns within the grid. You can use fixed measurements, percentage-based dimensions, or adaptable fr units that distribute space proportionally.
Code Sample
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Grid Template Columns and Rows</title> <style> .grid-container { display: grid; grid-template-columns: 100px auto 100px; grid-template-rows: 50px 200px; gap: 10px; } .grid-item { background-color: #8cacea; padding: 20px; text-align: center; color: white; } </style> </head> <body> <div class="grid-container"> <div class="grid-item">Header</div> <div class="grid-item">Main content</div> <div class="grid-item">Sidebar</div> <div class="grid-item">Footer</div> </div> </body> </html> |
Explanation of code
HTML structure
CSS Styling
In CSS Grid you have the ability to define the layout of the grid using properties, like grid template columns and grid template rows. These properties enable you to specify the number and dimensions of rows and columns within the grid. You can use fixed measurements, percentage-based dimensions, or adaptable fr units that distribute space proportionally.
Code Sample
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Grid Template Columns and Rows</title> <style> .grid-container { display: grid; grid-template-columns: 100px auto 100px; grid-template-rows: 50px 200px; gap: 10px; } .grid-item { background-color: #8cacea; padding: 20px; text-align: center; color: white; } </style> </head> <body> <div class="grid-container"> <div class="grid-item">Header</div> <div class="grid-item">Main content</div> <div class="grid-item">Sidebar</div> <div class="grid-item">Footer</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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