.tacbox {
  display:block;
  padding: 1em;
  margin: 2em;
  border: 3px solid #ddd;
  background-color: #eee;
  max-width: 800px;
}

input {
  height: 2em;
  width: 2em;
  vertical-align: middle;
}
/*
label {
  outline: 2px dotted #f00;
}

/*
label:after {
  content: attr(for);
}*/