.contact-form .button-loading {
  border: 1px solid #c4cdd5;
  cursor: default;
  text-shadow: none;
  color: transparent !important;
  position: relative;
  transition: border-color 0.2s ease-out;
}
.contact-form .button-loading:before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border-width: 3px;
  border-style: solid;
  margin-top: -9px;
  margin-left: -9px;
  width: 18px;
  height: 18px;
  animation: button-loading-spinner 1s linear infinite;
  border-color: #ffffff;
  border-bottom-color: transparent;
}
.contact-form .button-loading:hover, .contact-form .button-loading:focus, .contact-form .button-loading:active {
  color: transparent;
}
@keyframes button-loading-spinner {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}