JSFiddle - React, Tailwind, and code Playground

HTML

<div>text</div>

CSS

body {margin: 20px; background: url('http://www.uralstroyportal.ru/UserFiles/Image/stateiki3/Creamic_Tile.jpg');}

div {
    display: inline-block;
    position: relative;
    height: 25px;
    line-height: 25px;
    padding: 0 3px;
    background: green;
    color: white;
}

div:before {
    content: '';
    position: absolute;
    top: 0;
    left: -5px;
    bottom: 0;
    width: 0;
    border-left: transparent 5px solid;
    border-bottom: green 25px solid;
}

div:after {
    content: '';
    position: absolute;
    top: 0;
    right: -5px;
    bottom: 0;
    width: 0;
    border-left: green 5px solid;
    border-bottom: transparent 25px solid;
}