Add a border to any Facebook post which has more than 3 likes. It will apply to only this specific feed.

add-css-style-if-value-is-greater-than-3-using-jquery.js

/* 
@ Usecase: Add a border to any Facebook post which has more than 3 likes. It will apply to only this specific feed. 
@ Required plugin: https://wordpress.org/plugins/custom-facebook-feed/
@ Install [this plugin](https://wordpress.org/plugins/custom-css-js/) to inject custom CSS/JS code snippets into a WordPress site.
*/

jQuery(document).ready(function($) {
	$(".cff-likes .cff-count").each(function() {
		var el = $(this);
		var value = parseFloat(el.text());
		if(value > 3) { //if Facebook posts have more than 3 likes, add the following style
			el.parents(".cff-meta-wrap").prev().prev().css({
				"border": "1px solid red",
				"border-radius": "10px",
				"padding": "3px"
			});
		} else {
			el.css({
				"border": "none",
				"padding": "3px"
			});
		}
	});
});