div class="container" style="width: 750px; margin: 0 auto;">

<div class="row-full">
     --- Full width container ---
</div>

</div>

A teraz Css

.row-full{
 width: 100vw;
 position: relative;
 margin-left: -50vw;
 height: 100px;
 margin-top: 100px;
 left: 50%;
}

I efekt

 

 

Znalezione na stronie : Corer Wall