a:hover { text-decoration: none; }

table.letters { border-top: 2px dashed black; border-left: 2px dashed black; }
table.letters td { border-bottom: 2px dashed black; border-right: 2px dashed black; }
table.letters td.row1 { background-color: #F1F8F2; }
table.letters td.row2 { background-color: #EDEBE4; }