<style>
        wrapper  {display: flex; width: 100%; }
        graphic  {flex-grow: 1; text-align: center;}
        nav      {width: 200px;}
    </style>
    <wrapper>
        <nav><img src="http://lorempixel.com/200/200/" /></nav>
        <graphic><img src="http://lorempixel.com/200/200/" /></graphic>
        <nav><img src="http://lorempixel.com/200/200/" /></nav>
    </wrapper>