JSFiddle - React, Tailwind, and code Playground

HTML

<div class="car-search">
    <!--other divs removed for example-->
    <div class="border-bottom"></div>
</div>

<div class="car-search">
    <!--other divs removed for example-->
    <div class="border-bottom"></div>
</div>

<div>Another DIV</div>

CSS

.car-search .border-bottom{
        border-bottom: 1px solid #ccc;
        padding-top: 15px;
        margin-bottom: 15px;
        margin-left: 15px;    
}

.car-search:last-of-type .border-bottom{
    display: none;
}

JavaScript

$('.car-search').last().children('.border-bottom').remove();