JSFiddle - React, Tailwind, and code Playground

HTML

<div class="triangle-left"></div><div class="activebox"><p>Active</p></div></div>

CSS

.activebox {
    display: flex;
    width: 40px;
    height: 16px;
    line-height: 22px;
    background-color: #47DA91;
    align-items: center;
}

.triangle-left {
    display: inline;
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-right: 10px solid #47DA91;
    border-bottom: 8px solid transparent;
    float: left;
}

.activebox p {
    color: white;
    font-size:11px;
    padding-left:5px;
    padding-bottom:5px;
}