Hi,
I changed the CSS code and it works great!
The only problem left is padding-left and padding-right are set to be 15px.
So here’s the final code I used for future reference:
.page-id-9892 #main-container > #page-wrap > .container {
width: 100%;
padding-left: 0px;
padding-right: 0px;
}
Thanks a lot Kyle!