Add html to Donation Level Text

This custom snippet should help you to implement that:
https://github.com/WordImpress/Give-Snippet-Library/blob/master/form-customizations/add-html-after-multilevel.php

Just make sure that if you want it applied to ONLY one form, to insert the form ID correctly, otherwise, make sure to remove the $form_id == 5798 && part.

If you need guidance implementing custom PHP functions on your website, we have this guide here: https://givewp.com/documentation/resources/adding-custom-functions-to-your-wordpress-website/

Please note that this code snippet is provided as an example of how you can extend Give with code. It’s up to you to implement and customize to your liking. We cannot provide support for custom code on your website, only the code that we create and distribute.

I have 7 different donation levels on my form, would I have to replicate this function 7 times?

This is my page

I want the name of the package and the price to be on one line, and then I want to be able to list everything it includes, one item on each line which is why allowing html in the text field would be easiest.

For example:
Platinum – $3,000
Golf for Four at Ramblewood CC
Prominent Listing in all Advertising
Dinner/Cocktail Hour Sponsorship
Entry for Four to Dinner/Cocktail Hour
A Special Thank You Gift

If I manually enter bold spans or line breaks after each item, it just strips them out upon save

No, you would add a new IF statement for each level. Here’s an example:

function prefix_customize_give_buttons( $level_text, $form_id, $price ) {

	if ( $level_text == 'Small' ) {
		
		return $level_text . '<br /><span class="available">Your Small Text</span>';
	}
 
	if ( $level_text == 'Medium' ) {
		
		return $level_text . '<br /><span class="available">Your medium text</span>';
	}

	// Return all Level Texts
	return $level_text;
}
add_filter( 'give_form_level_text', 'prefix_customize_give_buttons', 10, 3 );

THANK YOU!!!