JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper_big">
<div class="row-fluid grey">
<div class="span4">Will be logo</div>
<div class="span8">Will be menu<br/><br/><br/><br/></div>
</div>
<div class="row-fluid grey">
<div class="span4">Will be logo</div>
<div class="span8">Will be menu<br/></div>
</div>
</div>

CSS

.grey{background-color: #eeeeee; height: 0px;}
.wrapper_big {width: 700px; margin: 0 auto;}
.span4{width: 200px; float:left; background-color: red}
.span8{width: 500px; float: left; background-color: blue}
.span4{
    min-height: inherit !important;
}