JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <div class="common true">1111</div>
    <div class="common">2222</div>
    <div class="common true">3333</div>
    <div class="common true">4444</div>
    <div class="common true">5555</div>
    <div class="common true">6666</div>
    <div class="common true">7777</div>
    <div class="common">8888</div>
</div>

CSS

.common.true{
      display: block;
       border-top: 1px solid red;
}
.common{
    display: none;
}
.true:last-child{
    border-top: none;
}