JSFiddle - React, Tailwind, and code Playground

HTML

<div class="n">
    <div class="v"></div>
</div>

CSS

body{
    margin: 0;
    padding: 0;
}
.n{
    background-color: red;
    width: 100px;
    height: 100px;
    padding: 0px;
    overflow:hidden;
    box-sizing: border-box;

 
}
 
.v{
    width: 60px;
    height: 60px;
    outline: 1px solid black;
    margin-top: 60px;
    background-color: blue;

}