JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
 <div>
   1
 </div>
  <div>
  2
 </div>

</div>

CSS

.container{
  flex:1;
  __display:flex;
  justify-content:center;
  align-items:flex-end;
  flex-direction:row;
  border:1px solid red;
  height: 100vh;
}

.container div{
  border:1px solid blue;
}