How to Center Div Site Container within browser window at 1920px?

Hello,

Due to the layout of my image gallery containing vertical images that need to be within a certain pixel width, my layout doesn’t transfer well to 1440px and above. I’ve put all content within a single Div Site Container in the hope of being able to control how wide the content on my site will be displayed. It works well enough when I set the Div Site Container to a max width of 1920px but then it leaves a big gap of white space on the right side.

Is there a way I can either A) center this Div Site Container so that it always is aligned to the center of browser window at 1440px and above or B) manipulate my images so they zoom/readjust their size to be responsive within a 1440px view?

Thanks in advance!


Here is my site Read-Only: //preview./preview/brendan-cole-photography?utm_medium=preview_link&utm_source=designer&utm_content=brendan-cole-photography&preview=51eef4b7042919de6fd9d6f643a3df79&mode=preview