image liquid code image size different on mobile and desktop versions

[Uwan]

Hi, please can someone help me my store link is https://148729.myshopify.com/ 

pass:deoltu

if you can navigate to https://148729.myshopify.com/pages/homeware

the homeware section and scroll down to where there is a long image that says cabinets,you will see that it is a clickable image and is linked to the the same page back again(which i will change the redirect to different page later).

1)But that image dont fully fit on to the desktop version.May i know how to make that fit onto the desktop version.
2)The image on mobile is streched in,can i also know how to make sure that the image properly fits in perfectly to mobile wesbite size so that i dont have to zoom out to see the image.

[Uwan]

please do