Hey Richard,
You will need to duplicated this part:
<a href="http://dev-pro2.pantheonsite.io/accommodations/murphy-exclusive/">
<span class="bg" style="background-image: url(http://dev-pro2.pantheonsite.io/wp-content/uploads/bg-exclusive.jpg);"></span>
<div>
<span>Murphy Exclusive</span>
<small>From $289 a Night</small>
</div>
</a>
Then, go to X > Theme Options > CSS and look for this selector .x-bnb-image-grid > a and in this declaration:
-webkit-flex: 1 1 360px;
flex: 1 1 360px;
Change 360 as per your needs. In case you don’t understand what I mean, please watch the screencast at https://youtu.be/gdj7KkbpSQ8
Please just note that the purpose of the guide is to give you an idea only. We won’t be able to provide further enhancements to the code as that would be veering into custom development and you will also need to watch out for syntax errors like omitting a character in the code because it is the user’s responsibility to fix custom code issues so I’d recommend that you learn how the code works if you wish to enhance and or fix it. You can start learning from sites like https://www.w3schools.com/ and I’d just recommend the tools below to check for HTML and CSS syntax errors.
Hope that helps and thank you for understanding.