the eww doesn't display my html file like it should be displayed when i do eww-open-file like it doesn't show colour and the size of heading also remains same as the rest of the document help me solve this please

Are you trying to use css? Eww only does pure html.

If `shr-use-colors` is enabled, then colours specified directly on the element will be used (including those in style attributes); but eww does not process stylesheets, and so indirect colours (e.g. on account of a class) have no effect. If `shr-use-fonts` is enabled then the h1 heading will be larger. Other headings will be normal size, but perhaps with other emphasis (bold for h2, italic for h3).

Very interesting thanks

Yeah thanks