table {
    width: 100%;
    background: #fff;
    border-collapse:separate;
    table-layout: fixed;
}

td {
    padding: .6em .8em;
    word-wrap: break-word;
    border-bottom: 1px solid #aaa;
}

tr:first-child td {
    border-top: 1px solid #aaa;
}

tr td:first-child {
    border-left: 1px solid #aaa;
    border-right: 1px solid #aaa;
}

tr td:last-child {
    border-right: 1px solid #aaa;
}

tr:first-child td:first-child
{
    border-top-left-radius:16px; 
}
tr:first-child td:last-child
{
    border-top-right-radius:16px; 
}
tr:last-child td:first-child
{
    border-bottom-left-radius:16px; 
}
tr:last-child td:last-child
{
    border-bottom-right-radius:16px; 
}