JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.1/css/bootstrap.min.css">
<script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.1/js/bootstrap.min.js"></script>
<div class="container">
    olololo lololo
    <div class="galka"></div>
<div>

CSS

.container{
    width:200px;
    height:200px;
    position:relative;
    border:1px solid #999; 
    margin-top:20px;
    border-radius:6px;
    padding:20px;
}
.galka{
    position:absolute;
    left:-5px;
    top:20px;
    background:red;
    height:10px;
    width:10px;
}