div#dBmToWatts {
    overflow-y: scroll;
    height: 30ch;
    max-width: 100ch;
}

div#dBmToWatts > table {
 font-family: monospace;
 background-color: bisque;
 border: 1px;  
   border-style: solid;
 width: 100ch;
}

div#dBmToWatts > table > thead>:nth-child(odd) {
   background:#BCC6CC;
}

div#dBmToWatts > table > thead>:nth-child(even) {
   background:#BCC6CC;
}

div#dBmToWatts > table> tbody {
   height: 15ch;
   overflow-y: scroll;
}

tbody>tr>:nth-child(1){
   width:9ch;
   text-align:right;
   padding-right: 1ch;
}

tbody>tr>:nth-child(2){
   width:10ch;
   text-align:right;
   padding-right: 1ch;
}

tbody>tr>:nth-child(3){
   width:11ch;
   text-align:center;
}

tbody>tr>:nth-child(4){
   width:11ch;
   text-align:center;
}

tbody>:nth-child(even){
   background:#BCC6CC;
}