<div class="flex gap-4">
<div class="w-48 h-48 bg-blue-500 rounded-lg"></div>
<div class="w-48 h-48 bg-green-500 rounded-lg"></div>
<div class="w-48 h-48 bg-purple-500 rounded-lg"></div>
<div class="w-48 h-48 bg-pink-500 rounded-lg"></div>
</div>
flex gap-4 -
가로 배치 + 간격
w-48 h-48 -
정사각형 크기