JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="post-container">

      <div class="post">                    
                     <h1>GIF</h1>                
                     <img src="" >
                     <div class="postRef" >
                         <button type="button" class="btn btn-link">4 likes</button>
                         <button type="button" class="btn btn-link">5 comments</button>
                         <button type="button" class="btn btn-link">User</button>
                     </div>
                     <div class="postBtns">
                         <button type="button" class="btn btn-success"><span class="glyphicon glyphicon-thumbs-up"></span></button>
                         <button type="button" class="btn btn-danger"><span class="glyphicon glyphicon-thumbs-down"></span></button>
                     </div>
                 </div>
      <div class="post">                    
                     <h1>GIF</h1>                
                     <img src="" >
                     <div class="postRef" >
                         <button type="button" class="btn btn-link">4 likes</button>
                         <button type="button" class="btn btn-link">5 comments</button>
                         <button type="button" class="btn btn-link">User</button>
                     </div>
                     <div class="postBtns">
                         <button type="button" class="btn btn-success"><span class="glyphicon glyphicon-thumbs-up"></span></button>
                         <button type="button" class="btn btn-danger"><span class="glyphicon glyphicon-thumbs-down"></span></button>
                     </div>
                 </div>
    </div>

    <div class="other-container">
    Other stuff!!!!<br><br><br><br><br><br><br><br><br><br><br><br>and others.
    </div>
    </div>
                 </div>

CSS

.container{
      margin: 0 auto;
      width: 80%;
      max-width: 800px;
    }
    .post-container{
      float:left;
      width: 70%;
    }
    .other-container{
      width: 29%;
      float: right;
      background: pink;
    }
    .post {
      display: inline-block;
    width: 100%;
    background: lightblue;
    }