SOURCE

<div class="container">
    <div class="row">
        <header class="col-md-2>
            <div class="logo">
                <a>
                    <
                </a>
            </div>
            <div class="nav"></div>
        </header>
        <article class="col-md-7>中间</article>
        <aside class="col-md-3">右侧</aside>
    </div>
</div>


<style>
@media screen adn (min-width:1280px){
    .container{width:1280;}
}
    .container{
        height:100px;
        background:pink;
    }



</style>