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Create css-grid.md
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‎docs/CSS/css-grid.md

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# CSS Grid
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## Introduction
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CSS Grid Layout is a powerful tool for creating two-dimensional layouts on the web. It allows you to design complex web layouts with rows and columns, making it easier to create responsive designs.
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## Basic Concepts
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### Grid Container
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A grid container is an element with `display: grid`. The children of this container become grid items.
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```css
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.container {
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display: grid;
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}
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```
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### Grid Items
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The direct children of a grid container automatically become grid items.
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```html
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<div class="container">
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<div class="item">Item 1</div>
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<div class="item">Item 2</div>
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<div class="item">Item 3</div>
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</div>
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```
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## Grid Properties
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### Container Properties
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#### grid-template-columns and grid-template-rows
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Defines the columns and rows of the grid.
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```css
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.container {
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grid-template-columns: repeat(3, 1fr); /* 3 equal columns */
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grid-template-rows: 100px 200px; /* 2 rows with specific heights */
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}
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```
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#### grid-gap
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Defines the gaps (gutters) between rows and columns.
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```css
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.container {
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grid-gap: 10px; /* gap between rows and columns */
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}
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```
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#### grid-template-areas
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Defines named grid areas.
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```css
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.container {
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grid-template-areas:
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'header header header'
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'sidebar content content'
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'footer footer footer';
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}
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```
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## Item Properties
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#### grid-column and grid-row
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Specifies the start and end lines for the item.
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```css
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.item {
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grid-column: 1 / 3; /* spans from column line 1 to 3 */
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grid-row: 1 / 2; /* spans from row line 1 to 2 */
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}
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```
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#### grid-area
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Specifies a grid item’s size and location within the grid by referencing the name of a grid area.
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```css
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.item {
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grid-area: header;
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}
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```
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# Examples
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## Basic Grid Layout
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```html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<style>
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.container {
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display: grid;
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grid-template-columns: 1fr 2fr 1fr;
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grid-gap: 10px;
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background-color: #f4f4f4;
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padding: 20px;
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}
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.item {
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background-color: #61dafb;
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padding: 20px;
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font-size: 20px;
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color: white;
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border-radius: 5px;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="item">Item 1</div>
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<div class="item">Item 2</div>
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<div class="item">Item 3</div>
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<div class="item">Item 4</div>
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<div class="item">Item 5</div>
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</div>
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</body>
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</html>
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```
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## Grid Layout with Areas
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```html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<style>
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.container {
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display: grid;
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grid-template-areas:
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'header header header'
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'sidebar content content'
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'footer footer footer';
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grid-gap: 10px;
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background-color: #f4f4f4;
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padding: 20px;
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}
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.header {
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grid-area: header;
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background-color: #61dafb;
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}
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.sidebar {
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grid-area: sidebar;
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background-color: #ff6347;
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}
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.content {
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grid-area: content;
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background-color: #ffa500;
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}
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.footer {
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grid-area: footer;
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background-color: #32cd32;
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}
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.item {
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padding: 20px;
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font-size: 20px;
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color: white;
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border-radius: 5px;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="header item">Header</div>
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<div class="sidebar item">Sidebar</div>
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<div class="content item">Content</div>
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<div class="footer item">Footer</div>
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</div>
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</body>
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</html>
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```
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# Conclusion
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CSS Grid is a powerful tool for creating complex and responsive web layouts. By understanding its various properties, you can design flexible and efficient layouts with ease.
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This guide covers the essential properties, concepts, and examples to help users understand and apply CSS Grid in their projects.

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