<header class="header-main">
	<img class="header-main__logo" src="files/logo.svg" alt="logo">
	<nav class="header-main__nav">
		<ul class="main-nav">
			<li class="main-nav__item">Home</li>
			<li class="main-nav__item">About us</li>
			<li class="main-nav__item">Contact</li>
		</ul>
	</nav>
</header>