<title>Bootstrap 4 Alignment of Columns Horizontally</title>
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<h2 class="text-center">Bootstrap 4 Alignment of Columns Horizontally</h2>
<div class="row justify-content-start">
<div class="col-3">1st row column one</div>
<div class="col-3">1st row column two</div>
<div class="row justify-content-center">
<div class="col-3">2nd row column one</div>
<div class="col-3">2nd row column two</div>
<div class="row justify-content-end">
<div class="col-3">3rd row column one</div>
<div class="col-3">3rd row column two</div>