You use visual styling to set the overall mood and look of your site. It keeps your text readable, makes your buttons pop, and ensures everything feels cohesive. Instead of messing with how things are placed on the screen (the layout), visual styling focuses solely on how they look.
[What it can do]

[Set colors and fills:] You can add solid background colors, cool gradients, subtle textures, or those almost-transparent overlays we talked about

[Shape your elements:] It lets you round off sharp corners, add borders, and change font styles or text colors

[Create depth:] Use drop shadows on boxes or text to make them appear to float or be layered.

[Add cool photo effects:] It lets you blur the background behind a pop-up, turn an image grayscale, or tweak contrast right in the code.