Responsive design that adapts to different screen sizes, simple layouts optimized for mobile use, and flat design with bold colors and white space became popular trends in 2015 web design. Flash began losing favor to HTML5 and CSS3. Designers focused on using natural color combinations, high quality images to give sites identity, and more white space to showcase content. Integrating social media helped drive traffic, and advanced scrolling and SEO-friendly content management systems like WordPress also gained importance.