<!DOCTYPE html>
<html>
	<head>
		<title>Alexander Titov</title>
	</head>
	<body>
		<nav>
    		<ul>
        		<li><a href="/">Home</a></li>
	        	<li><a href="/about">About</a></li>
        		<li><a href="/cv">CV</a></li>
        		<li><a href="/blog">Blog</a></li>
    		</ul>
		</nav>
		<div class="container">
    		<div class="blurb">
        		<h1>Hi there, I'm Alexander!</h1>
				<p>Some text here...</p>
    		</div><!-- /.blurb -->
		</div><!-- /.container -->
		<footer>
    		<ul>
        		<li><a href="mailto:alexander.igorevich.titov@gmail.com">email</a></li>
            <li><a href="https://github.com/alexander-titov">github</a></li>
        		<li><a href="https://www.linkedin.com/in/alexander-titov-cpu/">linkedin</a></li>
			</ul>
		</footer>
	</body>
</html>

<!DOCTYPE html>
<html>
    <head>
        <title>Alexander Titov</title>
        <!-- link to main stylesheet -->
        <link rel="stylesheet" type="text/css" href="/css/main.css">
    </head>
    <body>
        <nav>
            <ul>
                <li><a href="/">Home</a></li>
                <li><a href="/about">About</a></li>
                <li><a href="/cv">CV</a></li>
                <li><a href="/blog">Blog</a></li>
            </ul>
        </nav>
        <div class="container">
            <div class="blurb">
                <h1>Hi there, I'm Alexander!</h1>
                <p>Some text here...</p>
            </div><!-- /.blurb -->
        </div><!-- /.container -->
        <footer>
            <ul>
                <li><a href="mailto:alexander.igorevich.titov@gmail.com">email</a></li>
            <li><a href="https://github.com/alexander-titov">github</a></li>
                <li><a href="https://www.linkedin.com/in/alexander-titov-cpu/">linkedin</a></li>
            </ul>
        </footer>
    </body>
</html>

Add a link to main.css and replace \t with spaces
Add a link to main.css and replace \t with spaces