Intermediate LevelCSS & Modern Layouts
How does CSS Scroll Snap create smooth section-based scrolling?
❓ Interview Prompt: Explain scroll-snap-type, scroll-snap-align, and creating horizontal carousels with CSS scroll snap.
CSS Scroll Snap locks scrolling to defined snap points, creating smooth, section-based navigation:
Container Properties:
•
scroll-snap-type: y mandatory — vertical snapping, always snaps to nearest point.•
scroll-snap-type: x proximity — horizontal snapping, only snaps when near a point.Child Properties:
•
scroll-snap-align: start | center | end — where the child aligns within the viewport.Use Cases:
•
Full-page vertical section scrolling.
•
Horizontal image carousels without JavaScript.
•
Mobile app-like page transitions.
Code Implementation Example
css
/* Horizontal carousel */
.carousel {
display: flex;
overflow-x: auto;
scroll-snap-type: x mandatory;
-webkit-overflow-scrolling: touch;
scrollbar-width: none; /* Hide scrollbar */
}
.carousel-slide {
flex: 0 0 100%;
scroll-snap-align: start;
}
/* Full-page vertical sections */
.page-sections {
scroll-snap-type: y mandatory;
overflow-y: scroll;
height: 100dvh;
}
.section {
height: 100dvh;
scroll-snap-align: start;
}💡Horizontal carousel and full-page vertical scroll snapping.
🎯 Interview Key Takeaway
CSS Scroll Snap creates JavaScript-free carousels and section scrolling with native browser performance.
#Scroll Snap#Carousel#UX#Intermediate
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