How can I set a bottom border for each element except the last one?

Question

css

There is a block with elements in it, you need to add a bottom border for each element except the last one, how can I do this?
I can't edit html code

<div class='right_part'>
    		<div class='right_part_item'>
    		     <div class='right_part_item_date'> 07-12-2014	</div>
        	      <a class='right_part_item_link' href="some_link">Lorem ipsum .... </a>
    		</div>

                <div class='right_part_item'>
    		     <div class='right_part_item_date'> 12-11-2016	</div>
        	     <a class='right_part_item_link' href="some_link">Lorem ipsum .... </a>
    		</div>


                 <div class='right_part_item'>
    		      <div class='right_part_item_date'> 11-02-2018	</div>
        	       <a class='right_part_item_link' href="some_link">Lorem ipsum .... </a>
                   </div>

   </div>

Answer 1

.right_part .right_part_item {
   border-bottom: 1px solid red;
}
.right_part .right_part_item:last-child {
   border-bottom:  0px;
}