Hi vj.beluha,
Please go to the ‘Appearance > Customize > Additional CSS’ and paste the below Custom CSS code.
@media (min-width: 1600px) {
.post-template-default .site-content .container,
.page-template-default:not(.woocommerce) .site-content .container {
max-width: 1540px;
}
}
@media (min-width: 1800px) {
.post-template-default .site-content .container,
.page-template-default:not(.woocommerce) .site-content .container {
max-width: 1740px;
}
}
If you still need more width for content area then you can choose the page layout to fullwidth layout from ‘Appearance > Customize > Layout’. It will let you to hide the Sidebar and makes the content area as full width.
Thanks