Center multiple divs in another div?

Because you don’t know the number of divs you have, you should use

text-align:center on the outer div

display:inline-block on then inner div

http://jsfiddle.net/edi9999/yv2WY/

HTML

<div class = "container">
    <div class = "square">John</div>
    <div class = "square">Mary</div>
    <div class = "square">Doe</div>
    <div class = "square">Jane</div>
</div>

CSS

.square
{
    margin:1px;
    width:20%;
    text-align:left;
    border: 1px solid gray;
    display:inline-block;    
}
.container
{
    text-align:center;
    width:100%;
    height: 80pt;
    border: 1px solid black;
}