body {
  background-color: #dddddd;
  /* margin: 0px; */
  /* overflow: hidden; */
}
table {
    border-spacing: 0px;
    border: 0px;
  }

th, td {
    border: 1px solid #666;
  }

  td {
    text-align: center;
  }
  
  th {
    font-weight: normal;
  }

  td input {
    text-align:center;
    border-color: #ddd;
  }
  
  select {
    background-color: #ddd;
    border: none;
    width: 100%;
  }

  tr:nth-child(even) input {background-color: #ddd;} 
  tr:nth-child(odd) input {background-color: #ccc;} 
  
  /* tr:nth-child(even) {background-color: #ddd;} 
  tr:nth-child(odd) {background-color: #bbb;}  */
  th:nth-child(1) {font-weight: bold;}