What Is CSS Grid?

CSS Grid is a 2-dimensional layout system (rows + columns). Flexbox = one direction (row *or* column) Grid = both directions at the same time.

Basic Grid

.container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr; /* 3 equal columns */
  gap: 10px;
}
      

Grid Items

Grid items automatically place themselves into the next available cell.

<div class="container">
  <div class="box">1</div>
  <div class="box">2</div>
  <div class="box">3</div>
</div>

<style>
.box {
  background: #333;
  padding: 20px;
  border-radius: 6px;
}
</style>
      

Custom Column Sizes

grid-template-columns: 200px 1fr 2fr;
      

• 200px = fixed
• 1fr = one equal part
• 2fr = double the size of 1fr

Using Auto-Fill (Responsive Grids)

grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      

This makes the grid automatically fit as many cards as possible.

Grid Rows

grid-template-rows: 100px 100px;
      

Placing Specific Items

.item1 {
  grid-column: 1 / 3; /* spans 2 columns */
}
.item2 {
  grid-row: 1 / 3; /* spans 2 rows */
}
      

Full Example — Dashboard Layout

.container {
  display: grid;
  grid-template-columns: 200px 1fr 1fr;
  grid-template-rows: 100px 1fr;
  gap: 15px;
}

.header {
  grid-column: 1 / 4;
  background: #333;
}

.sidebar {
  background: #222;
}

.card {
  background: #333;
}
      

Grid vs Flexbox — Quick Comparison

• Use Flexbox for toolbars, navbars, single-row layouts
• Use Grid for dashboards, galleries, multi-row layouts

Why Grid Is Powerful

• Build complex layouts easily
• Responsive without media queries
• Cleaner code

What’s Next?

Next you’ll learn error handling in Batch — catching, preventing, and avoiding script failures.