Building Responsive Layouts Without JavaScript

Modern CSS gives us everything we need for responsive design — no JavaScript required.

BaseFrame uses CSS Grid and Flexbox for all layouts. The sidebar collapses on mobile. The blog grid adapts from three columns to one. The navigation switches to a hamburger menu. All pure CSS.

Key techniques

• CSS Grid with auto-fit and minmax()
• Flexbox for header alignment
• Media queries at 1024px for the hamburger breakpoint
• clamp() for fluid typography

The result is a template that works on every screen size without a single line of JavaScript for layout.