<div class="flex">
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<div class="flex-item">2</div>
</div>
<div class="flex">
<div class="flex-item">1</div>
<div class="flex-item">2</div>
<div class="flex-item">3</div>
</div>
<div class="flex">
<div class="flex-item">1</div>
<div class="flex-item">2</div>
<div class="flex-item">3</div>
<div class="flex-item">4</div>
</div>
<div class="flex">
<div class="flex-item">1</div>
<div class="flex-item">2</div>
<div class="flex-item">3</div>
<div class="flex-item">4</div>
<div class="flex-item">5</div>
</div>
.flex {display:flex;justify-content:space-between;width:100%;gap:20px;margin:0 0 20px;}
.flex-item {background:#000;color:#fff;width:100%;text-align:center;padding:20px;}
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