settings
code:style.css
.table-block table { background-color: transparent; border-collapse: separate; border-spacing: 2px }
.table-block table tr td { padding: .1em; background-color: rgba(0,0,0,0.04) }
.table-block table tr:nth-child(even) td { background-color: rgba(0,0,0,0.06) } /* 偶数行を濃くする */
.table-block table tr:first-child td { font-weight: bolder; text-align: center } /* 1行目だけ太字&中央揃え */
.table-block table tr td:first-child { padding: 0; background-color: transparent; border-width: 0 }