Gallery page artifacts

hi there
i have some visual artifacts left over while scrolling thru different size pictures on a Gallery page

there is a red arrow with a circle around the part of the screen i am talking about

 

Hello,

Do let us know your website link.

 

Hello,

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.zoombox .zoombox_close{
right: 0px;
top: 0px;
}

Adjust its value as per your requirements.

 

Thankyou.