form.wpcf7-form {
  position: relative;
}
form.wpcf7-form .wpcf7-response-output {
  border-color: #00A000 !important;
}
form.wpcf7-form.invalid .wpcf7-response-output {
  border-color: #A00000 !important;
}
form.wpcf7-form .wpcf7-spinner {
  position: absolute;
  left: 50%;
  bottom: 4em;
  -webkit-transform: translateX(-50%);
      -ms-transform: translateX(-50%);
          transform: translateX(-50%);
  margin: 0;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}