JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
    <meta name="description" content="Киномонстр -то портал о кино">
    <meta name="keywords" content="фильмы, фильмы онлайн, hd" />
    <link rel="stylesheet" href="assets/css/style.css">
</head>
<body>

	<div class="main">
		
        <div class="header">
             <div class="logo"> 
                  <div class="logo_text">
             	       <h1><a href="/">КиноМонстр</a></h1>
                       <h2>Кино - наша страсть!</h2>
                 </div>
             </div>
        	
        </div>

	</div>

</body>
</html>

CSS

.header {
   background-color:darkslateblue; 
   height: 177px;
   font-size: 0.8em;
   margin-left: 0px;
   margin-right: 0px;
   min-width: 900px
}

.main, .logo, .menubar, .site_content, .footer {
  margin-left: auto;
  margin-right: auto; 
}

.logo {
  width: 880px;
  padding-bottom: 40px;
}