Perplexing white space out of section

Hey, I applied horizontal scroll to my portfolio section My process, but the scrolling is making white space at right, You can check more about in the read only link below.

https://preview.webflow.com/preview/khan-ayans-spectacular-site?utm_medium=preview_link&utm_source=designer&utm_content=khan-ayans-spectacular-site&preview=6c3c7da0f3f89cb4a64e778cfaff1f95&workflow=preview