How to remove this white space in mobile mode

[WILLIAM0716]

I have this white space on both my home page and my product page. On the homepage I think is because of the slideshow, but I'm not sure why there is white space in my product page as well. I have tried the method that resize the slideshow but they don't work for me. 

My webiste url is https://upntbu-a1.myshopify.com/ 

password: boanfqx

  

[Asad-Mahmood · Accepted solution]

go to your online store -> edit code -> base.css file and paste this code in the end of file

html.js, body {
    overflow-x: hidden !important;
}

[WILLIAM0716]

It worked, thank you so mcuh!

[WILLIAM0716]

Hi, I found out a problem that is after adding this code my header is not sticky anymore.