JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container"></div>

CSS

#container {  
        -webkit-border-radius: 4px 3px 6px 10px;  
        -moz-border-radius: 4px 3px 6px 10px;  
        -o-border-radius: 4px 3px 6px 10px;  
        border-radius: 4px 3px 6px 10px;  
}        
#container {
    width: 200px;
    height: 200px;
    background-color: #FF0000;
}