th, td {
    padding: 0 10px;
}

thead tr {
    border-bottom: 1px solid #aaa;
}

td, th {
    border-left: 1px solid #aaa;
}

td:first-child, td:first-child {
    border-left: none;
}

th {
    font-weight: bold;
}

tbody tr:nth-child(even) {
    background: #ddd;
}

table {
    border: 1px solid black;
    margin: 1em 0;
}