CSS Grid Generator: Design Two-Dimensional Layouts Visually

CSS Grid handles what flexbox cannot — true two-dimensional layouts where you control both rows and columns simultaneously. A visual grid generator lets you draw your layout, name areas, set track sizes, and export clean CSS Grid code — no grid-template-columns: repeat(auto-fit, minmax(...)) memorization required.

What Is Grid Generator?

A CSS Grid generator provides a visual canvas where you define rows and columns (with px, fr, %, auto, minmax), draw grid areas by painting cells, set gaps, and configure alignment. The tool generates the complete CSS including grid-template-columns, grid-template-rows, grid-template-areas, and child placement rules.

How to Use Grid Generator on DevToolHub

1. Open the Grid Generator tool on DevToolHub — no signup required.
2. Set the number of columns and rows for your grid.
3. Define track sizes using fr, px, %, or minmax().
4. Draw grid areas by clicking and dragging across cells.
5. Name each area (header, sidebar, main, footer).
6. Set gap size and alignment properties.
7. Copy the generated CSS for the grid container and items.

Classic Holy Grail Layout

Header, sidebar, main content, and footer:

/* Container */
display: grid;
grid-template-columns: 250px 1fr;
grid-template-rows: 80px 1fr 60px;
grid-template-areas:
  "header  header"
  "sidebar main"
  "footer  footer";
min-height: 100vh;
gap: 0;

/* Children */
.header  { grid-area: header; }
.sidebar { grid-area: sidebar; }
.main    { grid-area: main; }
.footer  { grid-area: footer; }

Named grid areas make the layout self-documenting — you can see the page structure just by reading the CSS.

Responsive Card Grid with Auto-Fit

Cards that automatically fill available space:

display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
gap: 1.5rem;
padding: 2rem;

auto-fit with minmax creates a fully responsive grid — no media queries needed. Cards are at least 280px wide and expand to fill space.

Dashboard Layout with Spanning

A dashboard where charts span multiple cells:

display: grid;
grid-template-columns: repeat(4, 1fr);
grid-template-rows: auto;
gap: 1rem;

.chart-large {
  grid-column: span 2;
  grid-row: span 2;
}
.chart-wide {
  grid-column: span 3;
}
.stat-card {
  grid-column: span 1;
}

Spanning lets individual items claim multiple cells — perfect for dashboards with mixed content sizes.

Pro Tips

• Use fr units — fractional units distribute remaining space proportionally and are more flexible than percentages.
• Name areas for readability — grid-template-areas makes your layout visible in the CSS itself.
• Combine auto-fit with minmax — this one pattern handles 90% of responsive grid needs without media queries.
• Layer grids — a page can have a main grid layout, with individual sections using their own nested grids.

When You Need This

• Designing page layouts (header, sidebar, content, footer)
• Building responsive card grids and galleries
• Creating dashboard interfaces with mixed-size panels
• Prototyping magazine-style layouts with overlapping elements