How to make an Custom Liquid Image to fit any monitor screen as well as tablets and mobile

[DavitVlad]

I have an image that I was able to edit into the website and made it wide, it only fills from left to right on 13 inch screens, however when I open the site on a bigger screen the image looks too small, can someone help me make it so that even if its a 27 inch monitor the photo fits perfectly on all sizes. 

https://election2024merchrwb.com/

[suyash1]

@DavitVlad  please add this css to the very end of your base.css file and check,
Shopify Admin -> Online Store ->Theme -> Edit code -> base.css

.shopify-section-group-footer-group div {width: 100%;}
.shopify-section-group-footer-group div img{width: 100%;}