.block-type-imageblock .image
{
    margin:5px 8px;
    overflow:hidden;
    text-align:center;
    -webkit-box-shadow:  0px 0px 8px 0px rgba(0, 0, 0, 0.5);
            box-shadow:  0px 0px 8px 0px rgba(0, 0, 0, 0.5);
}

.block-type-imageblock .image img
{
    vertical-align:top;
    width:100%;
}