When it relates to HTML, autogrow refers to the auto-expansion of HTML element's width or height.
Autogrow is nothing but increasing the dimensions of HTML elements using CSS or some other tools with respect to the contents inserted into it.
Most of the HTML elements have the property of expanding its width and height according to the content inserted into it if we do not set width or height through CSS.
Some elements like DIV,h,p etc have width:100% as default. So we may initially set width/height to some values for these kind of elements. And there may be some situations, we need to expand these containers according to dynamically inserted contents (may be text, image etc...) or sometimes we may want to expand elements beyond browser window also. In these situations some CSS tricks will help us to increase width and height of the container with respect to the content.
