table {
  width: 1000px;
  border-collapse: collapse;
  border-spacing: 0;
  margin-bottom: 10px;
}

table tr:nth-child(2n-1) td.cmb_col_det {
  background: #F5F5F5; 
}

table th {  
  padding: 0px;  
  border-bottom: 1px solid #C1CED9;
  white-space: nowrap;        
  font-weight: normal;
}

table th.det_enc {
  background-color: rgb(219, 229, 241);  
  height: 25px;
  text-align: center;
}