Сделать логотип в меню, как на пикабу.

#logo { position: fixed; 
	height: 60px;
    overflow: hidden;
	width: 166px;
	z-index: 990;
}

 
<style>
  /* hide mobile version by default */
  .logo .mobile {
    display: none;
  }
  /* when screen is less than 600px wide
     show mobile version and hide desktop */
  @media (max-width: 600px) {
    .logo .mobile {
      display: block;
    }
    .logo .desktop {
      display: none;
    }
  }
</style>
 
<div class="logo">
  <img src="/images/logo_desktop.png" class="desktop" />
  <img src="/images/logo_mobile.png" class="mobile />
</div>