How Layering Works
The CSS `text-shadow` property accepts multiple comma-separated shadows. By layering them, you can create complex visual depth without using SVGs or images. E.g., stacking a bright glowing core and expanding soft blurry shadows creates realistic neon lights.
The Secret to 3D Text
To achieve a retro 'super mario' block 3D effect, you use 0px blur. You layer shadows downward and to the right, increasing the X and Y offsets by 1px for each layer (1px 1px, 2px 2px, 3px 3px), while keeping the color solid. This generator automates the tedious math.
Best Practices
Heavy text shadows are visually expensive to render. Only apply these effects to short display headings or hero texts. Avoid applying thick shadows to paragraphs, as it destroys readability and can cause browser lag on mobile.