Applying custom font to specific sections only

Hello,

I'm trying to add a signature font to 3x quote boxes on my site. 

I have uploaded my font to the Custom Files section in Custom CSS and applied the following code (I've added the font URL in):

}@font-face {
font-family: Signatie;
src: url(https://static1.squarespace.com/static/64ed4ba41f462e153ce7cb7d/t/651ce94e66fcd66d90e39203/1696393553455/Signatie.ttf);
}h1 {
font-family: 'Signatie';

I have used various header and paragraph sizes throughout my site so would ideally like to apply this to "miscellaneous" only, so I know it is only being used for these 3x specific sections.

What code do I need to add in order to do this? I'm using 7.1.

Thank you 

It's probably best to target those quote blocks directly using the block IDs.

https://squarefortytwo.com/squarespace-guides/find-an-id-in-squarespace-71

@Ziggy thank you, I've now created separate blocks for the copy I want in the custom font. 

The block IDs are below:

#block-yui_3_17_2_1_1696896549515_2160

#block-yui_3_17_2_1_1696896579340_2262

Block ID: #block-yui_3_17_2_1_1696896579340_4400

I have tried applying this to the below code, but something isn't right (sintax error):

{#block-yui_3_17_2_1_1696896549515_2160 font-family: 'Signatie';
}

Please can you correct this?

Thank you