.add {
width:100%;
border:1px solid black;
border-collapse: collapse;
border-spacing: 0
}
.add tr {
vertical-align:top;
}
.add td, .add th {
padding: 5px;
border:1px solid black;
}
.add th, .add td:nth-child(4), .add td:nth-child(5), .add td:nth-child(6), .c {
text-align:center
}