Tailwind CSS class .gap-y-px

    <div class="grid grid-cols-3 gap-y-px">
        <div class="h-4 bg-teal-400"></div>
        <div class="h-4 bg-purple-400"></div>
        <div class="h-4 bg-indigo-400"></div>
        <div class="h-4 bg-indigo-400"></div>
        <div class="h-4 bg-teal-400"></div>
        <div class="h-4 bg-purple-400"></div>
    </div>