HTML
<header>
<div class="header_container">
<a href="#" class="logo"><img src="imagenes/logo.png" alt=""></a>
<nav>
<ul>
<li><a href="index.html">Home</a></li>
<li><a href="productos.html">Productos</a></li>
<li><a href="#">Contactos</a></li>
</ul>
</nav>
</div>
</header>
CSS
header{
width: 100%;
background-color: #6D6D6D;
display: flex;
justify-content: space-between;
align-items: center;
}
.header_container{
width: 1200px;
display: flex;
align-items: center;
justify-content: space-between;
margin: auto;
padding: 0 50px ;
}
.logo img{
width: 70px;
}
nav{
display: flex;
}
nav li{
list-style: none;
display: inline;
}
nav li a{
text-transform: uppercase;
color: #000;
font-weight: bold;
font-size: 16px;
text-decoration: none;
padding: 0 20px;
margin-right: 20px;
}