JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent"></div>

CSS

* {
    padding: 0;
    margin: 0;
}

.parent {
    position: relative;
    width: 100%;
    height: 300px;
    background-color: orange;
    overflow: hidden; /*МАГИЯ БЛЕАТЬ*/
}

.parent:before {
    display: block;
    content: '';
    position: absolute;
    top: 0; left: 0;
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 40px 1680px 0 0;
    border-color: green transparent transparent transparent;
}