Mobile-First CSS
Mobile-first CSS starts with the constrained layout and progressively enhances it for larger screens. This often results in simpler base styles and clearer media queries.
Mobile-first does not mean mobile devices are more important. It means the stylesheet starts with the smallest practical layout constraints.
Mobile-First Progression
Mobile-First Layout
.dashboard {
display: grid;
grid-template-columns: 1fr;
}
@media (min-width: 800px) {
.dashboard {
grid-template-columns: 240px 1fr;
}
}💡 The base layout works on narrow screens and the larger-screen layout is added progressively.
Key Takeaways
- Start with a resilient constrained layout.
- Use
min-widthqueries for progressive enhancement.
Knowledge Check
What is the typical direction of mobile-first responsive CSS?