[Grace Themes]

Hi Amlan,

You can remove ‘latest posts’ section from footer and use your own WordPress widget.
Go to Appearance -> Widget -> Footer Widget2 -> Use text/Image widget

Please check the documentation to customize the widgets
https://www.gracethemes.com/documentation/pleasant-doc/#widgets

The width of the logo image changes according to the height selected. So size of the logo changes as per the height selected.
Can you please share tour website URL so we can check?

Regards
Grace Themes