.pow-captcha {
  margin: 8px 0 16px;
}

.pow-captcha__button {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 360px;
  min-height: 54px;
  padding: 10px 14px;
  border: 1px solid #c8c8c8;
  background: #fff;
  cursor: pointer;
  text-align: left;
  font: 16px/1.3 Arial, Helvetica, sans-serif;
  color: #333;
}

.pow-captcha__box {
  width: 26px;
  height: 26px;
  margin-right: 12px;
  border: 2px solid #ad2d25;
  border-radius: 3px;
  box-sizing: border-box;
  flex: 0 0 26px;
}

.pow-captcha__button.is-busy .pow-captcha__box {
  border-color: #b9b9b9;
  border-top-color: #ad2d25;
  border-radius: 50%;
  animation: pow-spin 0.8s linear infinite;
}

.pow-captcha__button.is-ok .pow-captcha__box {
  position: relative;
}

.pow-captcha__button.is-ok .pow-captcha__box:after {
  content: "";
  position: absolute;
  left: 8px;
  top: 3px;
  width: 7px;
  height: 13px;
  border: solid #2e7d32;
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
}

.pow-captcha__error {
  color: #6d221c;
  margin: 8px 0 0;
}

@keyframes pow-spin {
  to { transform: rotate(360deg); }
}