It sounds like you're saying the website has a horizontal scrollbar, which is generally considered undesirable. This would depend on the coding of the website, there are many things that could push out the width beyond what would fit on screen. If you can post the URL web address where this is happening so the cause of your problem can be diagnosed.
Edit: If you're saying the website is zoomed in, this is a feature of many web browsers, you can simply unzoom (usually by holding Control and pressing 0).
@Dawn451It looks like you're using Wix.com Website Builder. Check with that provider if you can switch to a responsive theme.