Resizing does not work, column headers and data cells are misaligned.

[alexandis]

Not only it's all misaligned (i removed the classes, related to column fixed widths), but when I resize header - data cells are not resized, when I try to resize data cell - it does not react.

Tried Chrome and FF. Windows 8.1.

CSS:

.contentTable{}
.contentTable thead{
    display: block;
    position: relative;
}
.contentTable tbody{
    display: block;
    overflow-y: auto;
    overflow-x: hidden;
    width: 100%;
    max-height: 60vh;
    -ms-overflow-style: none;
}