JSFiddle - React, Tailwind, and code Playground
HTML
<div class="container">
<div class="box a">a</div>
<div class="box b">b</div>
<div class="box c">c</div>
</div>
CSS
.container {
display: flex;
flex-wrap: wrap;
flex-direction: row;
justify-content: stretch;
align-items: stretch;
}
.box {
background: orange;
border: 1px solid #000;
width: 100%;
}
.b {
width: 20%;
margin: 0 auto;
}
.c {
width: 10%;
margin: 0 auto;
}