Code for only one block / section

Site URL: https://www.history-ink.com/home

Hi there! 

I have some code which works great, but I only want it on one section of the site. 

The code currently sits in Custom CSS, is there any code I can apply, so it only works with one block? 

Current code that is global:
.design-layout-poster:hover .image-overlay { background: rgb(58,141,222) !important;
 opacity: 100;
  }

Block ID I need it applied to: 
section[data-section-id="62b2fd95b9b78b76bf53ece3"]

Thanks! 

Use this code

section[data-section-id="62b2fd95b9b78b76bf53ece3"] .design-layout-poster:hover .image-overlay { background: rgb(58,141,222) !important;
 opacity: 100;
  }