how did you integrate the wide Video game inventory with shopify? or do you list every game individually? is there an app? i know price charting will auto update the prices. but i havent found a way to make it easier yet. do you know?

i have sections of my page that wont connect or meet together. Ive tried editing the padding. that has not fixed it please help. Store URL is :https://www.gunpla-box.com/ The large white gaps should explain the issue clearly.