ExcelみたいなCSS

table {
border: 1px solid #ccc;
border-collapse:collapse;
}
td {
padding :0px;
border: 1px solid #ccc;
}
tr input {
background-color:#eef;
border:0;
}
tr:nth-child(2n) input {
background-color:#eee;
border:0;
}