Hey,
Thanks for letting us know about the issue. We'd love to help you with this.
You can set the container width to 100% for full width and select the fluid type from the layout. Follow the steps to set the width
Open TemplateToaster->Your Template->Container->Layout->Fluid->Width->100%->Save
We are also sharing screenshots for your reference. We hope this is helpful. Let us know if you have any more questions, comments, or concerns.
Sincerely,
TemplateToaster Support