CSS and JavaScript are usually associated with styling and interactivity respectively, but whenever possible it is advisable to use CSS for interactivity because it loads faster and causes less reflow, improving performance.
Minimal HTML structure for the slider
The structure is very simple. Create a carousel container and several slide elements with markup like the following:
<div class=carousel-container><div class=carousel-slide>1</div>...</div>
Basic styling with CSS
To make the content scrollable and show multiple cards on desktop and one on mobile, use flex and overflow-x auto. A summarized example:
.carousel-container { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; } .carousel-slide { flex: 1 0 30%; scroll-snap-align: center; } @media (max-width: 600px) { .carousel-slide { flex: 1 0 90%; } }
Explanation of scroll snap
The container uses scroll-snap-type with the x axis and mandatory mode to force snapping to the nearest element. Each slide uses scroll-snap-align to indicate which part of the element should remain visible, for example center.
Progress bar with CSS only
If you want a visual progress bar, you can take advantage of scrollbar pseudo-elements in WebKit browsers. A summarized example:
.carousel-container::-webkit-scrollbar { height: 8px; } .carousel-container::-webkit-scrollbar-thumb { background: #29AB87; } .carousel-container::-webkit-scrollbar-track { background: #b1b3b399; } .carousel-container::-webkit-scrollbar-track-piece:start { background: #29AB87; }
Important: these rules are non-standard and do not work in all browsers. In non-compatible browsers, the bar will appear as a normal bar.
Improvements with JavaScript
If you want to add arrows for navigation and fine-tune the experience, you can complement it with a small script that moves the scroll by the width of one slide. A compact example:
const carousel = document.querySelector(.carousel-container); const slide = document.querySelector(.carousel-slide); function handleCarouselMove(positive = true) { const slideWidth = slide.clientWidth; carousel.scrollLeft = positive ? carousel.scrollLeft + slideWidth : carousel.scrollLeft - slideWidth; }
Assign the function to the arrow buttons in the HTML using onclick to call handleCarouselMove and handleCarouselMove(false) as appropriate.
Summary and best practices
With pure CSS you can build a clean, accessible, and efficient slider using flex, overflow-x, and scroll-snap. Add optional improvements with JavaScript for arrow navigation, pagination, or custom indicators, and consider the compatibility of scrollbar pseudo-rules before using them in production.
About Q2BSTUDIO
At Q2BSTUDIO we are a custom software and application development company specialized in advanced technological solutions. We offer custom software services and custom applications for companies in all sectors. We are also specialists in artificial intelligence and AI for businesses, developing custom AI agents and integrations that enhance processes and decision-making.
Our services include comprehensive cybersecurity, AWS and Azure cloud services, and business intelligence services that include Power BI implementations for visualization and analysis. If you need custom software, custom applications, artificial intelligence solutions, or cybersecurity consulting, Q2BSTUDIO brings technical expertise and a results-oriented approach.
Keywords and positioning
Custom applications, custom software, artificial intelligence, AI for businesses, AI agents, cybersecurity, AWS and Azure cloud services, business intelligence services, Power BI.
If you want us to adapt this slider to your product or integrate it with AWS and Azure cloud services, or connect it to a business intelligence solution with Power BI and AI agents, contact Q2BSTUDIO for a personalized technical and economic proposal.
