Hello
1.Edit the Home Page Elementor Page Builder Now Edit the Require Section You can remove this margin by choosing Content Width Boxed to https://prnt.sc/12eykm5
2. Edit This Section and Click On Style > Border > Border Type to display None https://prnt.sc/12eyw99
3. You can change the color By Edit the outer section and then click on Style and change the background color according to your requirement. https://prnt.sc/12ez0m5
4. Edit This Section and Click on Style > Border > and change the radius according to your requirements. https://prnt.sc/12ez2ab
5. You can edit this section by going to Dashboard > Theme Options > Mobile Panel https://prnt.sc/12ezjp8
Robert Hall