■レイアウト:Flex d-flex:ユーティリティ:flexコンテナの主軸方向の整列 justify-content-around
flex文字01
flex文字02
flex文字03
<div class="d-flex justify-content-around">
<div>flex文字01</div>
<div>flex文字02</div>
<div>flex文字03</div>
</div>
<div class="d-flex justify-content-around">
<div>flex文字01</div>
<div>flex文字02</div>
<div>flex文字03</div>
</div>