JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
    <div class="headline">
        <img class="image" width="36" height="36"/>
    </div>
    <hr class="upper-triangle"/>
    <div class="arrow-wrapper"></div>
</div>

CSS

.wrapper
{
    width: 100%;
    position: relative;
    border: 1px solid red;
    overflow: hidden;
    padding-bottom: 12px;
}
.upper-triangle
{
    -moz-transform: rotate(-3.5deg);
    -o-transform: rotate(-3.5deg);
    -webkit-transform: rotate(-3.5deg);
    -webkit-transform-origin: 0% 0%;
    -ms-transform: rotate(-3.5deg);
    transform: rotate(-3.5deg);
    border-color: black;
    border-style: solid;
    border-width:2px;
    position: relative;
    top: 10px;
    zoom: 1;
    width: calc(100% - -2px);
    right: 1px;
}
.arrow-wrapper
{
    position: absolute;
    top: 41px;
    left: 22px;
    z-index: 1;
}
.arrow-wrapper::before
{
    border-style: solid;
    border-width: 16px 0px 0px 20px;
    border-color: transparent transparent transparent black;
    position: absolute;
    content: "";
}
.arrow-wrapper::after
{
    position: absolute;
    content: "";
    width: 0;
    height: 0;
    margin-top: 8px;
    margin-left: 4px;
    border-style: solid;
    border-width: 16px 0 0 20px;
    border-color: transparent transparent transparent white;
}