Lesson 6: CSS Grid 2-Dimensional Layouts & repeat()

While Flexbox is ideal for single rows or columns, CSS Grid (display: grid) handles both rows and columns simultaneously.

grid-template-columns: Defines column tracks (e.g. repeat(3, 1fr) or repeat(auto-fit, minmax(280px, 1fr))).

gap: Clean spacing between rows and columns without margins.

grid-column / grid-row: Enables spanning across multiple cells (grid-column: span 2;).

⊞HTML5 Web Code (index.html)

<!DOCTYPE html>

<head>

<title>CSS Grid Master Layout</title>

<style>

body {

background-color: #17181c;

color: #ffffff;

font-family: Arial, sans-serif;

padding: 30px;

}

.responsive-grid {

display: grid;

grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));

gap: 16px;

}

.grid-card {

background-color: #1f2029;

padding: 24px;

border-radius: 12px;

border: 1px solid #333;

text-align: center;

transition: transform 0.2s, border-color 0.2s;

}

.grid-card:hover {

transform: translateY(-4px);

border-color: #04AA6D;

}

</style>

</head>

<body>

<h2>Responsive CSS Grid System</h2>

<div class="grid-card"><h3>HTML5</h3><p>Semantic Architecture</p></div>

<div class="grid-card"><h3>CSS3</h3><p>Modern Layouts</p></div>

<div class="grid-card"><h3>JavaScript</h3><p>Dynamic Interactivity</p></div>

<div class="grid-card"><h3>React</h3><p>Component Ecosystem</p></div>

</div>

</body>

</html>