Breakpoint Visualizer & Sandbox

Test responsive layouts, simulate device viewports, and generate clean CSS media queries instantly.

px
px
320px Current Viewport Sandbox 1920px
1200px × 700px • Desktop
Laptop

Responsive Container

Laptop View

Resize the viewport using the controls above or drag boundaries to inspect responsive layout adaptation.

Fluid Grid Card 1

Adapts fluidly based on parent container width.

Fluid Grid Card 2

Test layout wrapping and spacing breakpoints.

Fluid Grid Card 3

Inspect typography and media query application.

Generated CSS Media Query Snippet

/* Active Viewport Media Query */
@media (min-width: 1200px) {
  /* Styles for Laptop and Up */
  .container {
    max-width: 1140px;
  }
}
Quick Jump: Mobile (480px) Tablet (768px) Laptop (1024px) Desktop (1280px) Ultrawide (1536px)