@Dorshit_Yeung hi there! I saw your newer post on this topic but for simplicity’s sake I closed that and I’ll try and answer your question here.
What you will want to do is create a page and call that ‘style guide’. This is a good practice to keep any time you’re creating a website. It’s a page on your website where you put all your elements (all headings, body text, links, rich text). This allows you to style them in one place.
To style the snippet highlight, you will add a ‘rich text’ element to your style guide page. Here’s how to style anything within a rich text element Adjust indent of bullet list in rich text element - #2 by sarahfrison. Let me know if you’ve got more questions 