I had to add width: 100%; to display table to fix some strange bahavior in IE and FF, when i used this example. IE and FF had some problems displaying the col-md-* tags at the right width
.display-table {
display: table;
table-layout: fixed;
width: 100%;
}
.display-cell {
display: table-cell;
vertical-align: middle;
float: none;
}