จัดเรียงรายการศูนย์กลาง bootstrap
<div class="d-flex align-items-start">...</div>
<div class="d-flex align-items-end">...</div>
<div class="d-flex align-items-center">...</div>
<div class="d-flex align-items-baseline">...</div>
<div class="d-flex align-items-stretch">...</div>
ustify-เนื้อหาภายใน:flex-สิ้นสุด
<div class="d-flex justify-content-end">...</div>
flex ห่ bootstrap
<div class="d-flex flex-wrap">...</div>
alighn ต boostrap 4
<div class="float-left">Float left on all viewport sizes</div><br>
<div class="float-right">Float right on all viewport sizes</div><br>
<div class="float-none">Don't float on all viewport sizes</div>
bootstrap flex ทิศทางคอลัมน์
d-flex flex-column
flex ทิศทางคอลัมน์ bootstrap 4
<div class="d-flex justify-content-start">...</div>
<div class="d-flex justify-content-end">...</div>
<div class="d-flex justify-content-center">...</div>
<div class="d-flex justify-content-between">...</div>
<div class="d-flex justify-content-around">...</div>