JSFiddle - React, Tailwind, and code Playground

HTML

<header>
		<a href="/" class="logo">Логотип</a>
		<div class="navigation">
			<span id="nav-toggle"></span>
			<nav>
				<a href="#">Пунк 1</a>
				<a href="#">Пунк 2</a>
				<a href="#">Пунк 3</a>
				<a href="#">Пунк 4</a>
				<a href="#">Пунк 5</a>
				<a href="#">Пунк 6</a>
			</nav>
		</div>
	</header>

CSS

header{
	width: 1170px;
	margin: auto;
	padding: 30px 0 30px 70px;
}
header a.logo{
	float: left;
	width: 288px;
	height: 83px;
}
nav{
	position: relative;
	float: right;
	margin-top: 18px;
	padding: 22px 0 22px 17px;
	background: #d91d52;
}
nav:before{
	content: "";
	display: block;
	position: absolute;
	top: 0;
	left: -46px;
	bottom: 0;
	border-bottom: 66px solid #d91d52;
	border-left: 46px solid transparent;
}
nav a{
	margin-right: 35px;
	font-family: 'Open Sans', sans-serif;
	text-decoration: none;
	font-style: italic;
	text-transform: uppercase;
	color: #fff;
}