/*http://stackoverflow.com/questions/14607695/flashing-table-row*/
@-webkit-keyframes invalid {
  from { background-color: red; color: white;}
  to { background-color: inherit; color: inherit; }
}
@-moz-keyframes invalid {
  from { background-color: red;  color: white; }
  to { background-color: inherit;  color: inherit; }
}
@-o-keyframes invalid {
  from { background-color: red;  color: white; }
  to { background-color: inherit;  color: inherit; }
}
@keyframes invalid {
  from { background-color: red;  color: white; }
  to { background-color: inherit;  color: inherit; }
}
.invalid {
  -webkit-animation: invalid 1.5s infinite; /* Safari 4+ */
  -moz-animation:    invalid 1.5s infinite; /* Fx 5+ */
  -o-animation:      invalid 1.5s infinite; /* Opera 12+ */
  animation:         invalid 1.5s infinite; /* IE 10+ */
}