JSFiddle - React, Tailwind, and code Playground

HTML

<div><span></span>design</div>

CSS

body { background: red; }

div {
    margin: auto;
    width: 150px;
    height: 50px;
    background: #fff;
    text-align: center;
    line-height: 50px;
    position: relative;
    border-radius: 0 5px 5px 0;
}

div:before {
    content: '';
    position: absolute;
    border: 25px solid transparent;
    border-right: 25px solid #fff;
    top: 0;
    right: 100%;
}

div span {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: blue;
    top: 50%;
    left: 0;
    margin-top: -5px;
    cursor: pointer;
}

JavaScript

document.querySelector('div span').onclick = function() {
    this.parentNode.style.display = 'none';
}