Modern websites rarely use fixed sizes.
A heading might scale with the screen size. A card might grow until it reaches a maximum width. Those rules are what make a layout work across phones, tablets, and desktops.
Visual editors often lose that information. Resize an element, and a carefully written responsive rule turns into a fixed pixel value. It looks right for the moment, but the responsive behavior is gone.
Pixy takes a different approach.
When you drag a resize handle, Pixy changes the CSS rule that's actually controlling the size. If an element is sized with clamp(), Pixy adjusts the part of the rule that defines its preferred size instead of replacing it. If the size comes from a maximum or minimum constraint, that's what changes instead.
The result is simple: you can resize an element without giving up the responsive behavior your CSS already describes.
The properties panel also makes those relationships easier to see, showing minimums, maximums, and authored values separately from the element's current size.
Open a page from your project, grab a resize handle, and see how responsive CSS stays responsive.