table { 
    border: 1px solid #ddd;
    border-collapse: separate;
    border-left: 0;
    border-radius: 4px;
    border-spacing: 0px;
}
thead {
    display: table-header-group;
    vertical-align: middle;
    border-color: inherit;
    border-collapse: separate;
}
tr {
    display: table-row;
    vertical-align: inherit;
    border-color: inherit;
}
th, td {
    padding: 5px 4px 6px 4px; 
    text-align: center;
    vertical-align: top;
    border-left: 1px solid #ddd;    
}
td {
    border-top: 1px solid #ddd;    
}
thead:first-child tr:first-child th:first-child, tbody:first-child tr:first-child td:first-child {
    border-radius: 4px 0 0 0;
}
thead:last-child tr:last-child th:first-child, tbody:last-child tr:last-child td:first-child {
    border-radius: 0 0 0 4px;
}