main.css

body {
    font-family: Arial;
    padding:0.5em;
}

input[type=file] {
  display:none;
}

#input-area {
  white-space:nowrap;
}

#toolbar {
  margin-top:5px;
}

table {
    margin-top: 1em;
    padding: 1em;
    border: solid #C0C0C0 1px;
    border-collapse: collapse;
}

table thead td {
    background-color: palegoldenrod;
    text-align: left;
}

table td {
    border: solid #C0C0C0 1px;
    position:relative;
}

table td {
    padding: 4px 10px;
    border: solid #C0C0C0 1px;
}

tbody td:first-child {
    font-family: monospace;
    background-color: aliceblue;
}

button, label.button {
    background-color: blue;
    color: white;
    padding: 4px 8px;
    font-weight: bold;
    font-size:11pt;
    margin: 7px 1px;
    border: solid gray 1px;
    cursor:pointer;
}

td .delete {
  cursor:pointer;
  position:absolute;
  top:1px;
  right:3px;
  margin:2px;
  display:none;
}

td:hover .delete {
  display:block;
}

button[disabled], label.button[disabled] {
    cursor:default;
    background-color:#191970;
    color:lightgray;
}

td.missing, td.multiple {
  background-color:red;
}

td.empty {
  background-color: orange;
}

.additional-info {
  display: inline-block;
}