I have the following scenario:
I have a <div class="row"> and then I have another <div class="col-lg-3"> where I will be putting the picture of a profile of an user. The problem is that I would like to center that picture to be in the middle of the available space, so I would normally do this: 
<div class="row">
    <div class="col-lg-3 col-lg-offset-x">
        <img src="..." class="..." alt="..." title="..." data-size="...">
    </div>
</div>
What would be the x value on the class of the <div class="col-lg-3 col-lg-offset-x"> If I wanted to center that div? Anybody has any idea how to do that?  
 
     
    