Hi There!

Thanks for reaching out.

Your site URL here would be better though.

However, you can try the following code in your custom CSS:

.sp-simpleportfolio .sp-simpleportfolio-image {
    margin-bottom: 50px;
}
.sp-simpleportfolio .sp-simpleportfolio-description>h2 {
    margin: 0 0 50px;
}

You can change the values in the above code as per your need.

Here is all about custom code placement in Helix Ultimate: https://www.joomshaper.com/documentation/helix-framework/custom-code-css-js-meta

Best Regards