How A Bottom-Up Design Approach Enhances Site Accessibility - Smashing Magazine
Briefly

Accessibility is key in modern web design. A site that doesn't consider how its user experience may differ for various audiences - especially those with disabilities - will fail to engage and serve everyone equally. One of the best ways to prevent this is to approach your site from a bottom-up perspective.
Bottom-up philosophies, by contrast, consider the minute details first, eventually achieving the broader goal piece by piece. This alternative way of thinking is important for accessibility in general because it reflects how neurodivergent people commonly think.
Research shows that people with autism and ADHD show a bias toward bottom-up thinking rather than the top-down approach you often see in neurotypical users. Consequently, a top-down strategy means you may miss details your audience may notice, and your site may not feel easily usable for all users.
Making the most of this opportunity will both extend your reach to new niches and make the web a more equitable place.
Read at Smashing Magazine
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