Responsive design mockup, digital illustration, modern minimalist style, desktop, laptop, tablet, mobile phone, various screen sizes, resolutions, and orientations, wireframe, clean lines, simple shapes, vibrant colors, soft shadows, subtle gradients, interactive elements, hover effects, scrolling animations, loading icons, navigation menu, search bar, call-to-action buttons, social media icons, footer section, flat design, 2D graphics, pixel-perfect, high-resolution, retina display, UI kit, customizable components, layout grid system, typography, font sizes, line heights, padding, margins, responsive typography, adaptable imagery, image compression, lazy loading, semantic HTML structure.