How can I remove page margins on my jewelry website?

Store Design
1

Hi. Is there a way to get rid of these parts of my pages?

https://provada-jewelry.myshopify.com/

“staysk”

Provada-Jewelry (1).png
Provada-Jewelry (1).png1917×2959 562 KB

2

@jordontricks

Please Go to Online Store → Themes → Edit code → Assets → theme.scss.liquid and paste this code at the end of this file.

#shopify-section-16266671911705cb0b {
margin-top: 0px !important;
}

#shopify-section-16266671911705cb0b .collection-collage__item {
    margin-bottom: 0px;

}