This theme gives you a wide layout for your page content. You also get a setting to adjust the width if you decide to make it smaller. You can go as low as 1024 pixels or as high as 1200 pixels.
This will adjust the overall width for your main content and the header elements:
Go to Appearance >> Customize >> Theme Options >> Basic Settings
Look for the “Content Width” setting and move the slider to adjust the width. You can see this in the preview window.
Click “Save & Publish“