Block Inside Blcok

[alawe45]

hi everyone .
i need to know how can i write the header content like navigation or logo etc. in bem
i have something like this:

<header>
  <a href="">Logo</a>

  <nav>
    <ul>
      <li><a href="">one</a></li>
      <li><a href="">two</a></li>
      <li><a href="">three</a></li>
      <li><a href="">four</a></li>
    </ul>
  </nav>
</header>

thanks

[vhood]

<header class="header">
  <a class="header__logo" href="">Logo</a>

  <nav class="header__navigation navigation">
    <ul class="navigation__list">
      <li><a class="navigation__link" href="">one</a></li>
      <li><a class="navigation__link" href="">two</a></li>
      <li><a class="navigation__link" href="">three</a></li>
      <li><a class="navigation__link" href="">four</a></li>
    </ul>
  </nav>
</header>