Hi DoQtor

Thank you for reaching out to us.

Please provide us with the URL link of the page where you have added this shortcode so we can provide you with the custom CSS needed to achieve this.

Thank you.

I will forward this to our level 2 to see if we have a custom CSS available.

We appreciate your time and patience.

Hi there.

This will be fixed with one of our future updates (hopefully the one scheduled to be released this week), but until then, please try adding this CSS to the page:

.el-col-md-12 {
width: 50%;
}

And it should look like this:

Hi again DoQtor

I haven't worked that much with the divi theme, so I don't know exactly how you should add custom CSS to a divi page.

If the previous code doesn't work, try this:

.el-col-md-12 {
width: 50% !important;
}

Custom code needs to be applied to the page where the booking form is. Depending on what you're using (Gutenberg blocks, or some page builder), adding the CSS or JS can be done in a few different ways. 

If you need help with adding custom CSS to the page, please take a look at this article.