.slider-captcha {
  position: relative;
  width: 100%;
  max-width: 300px;
  margin: 10px 0;
}
.slider-captcha .track {
  background: #eee;
  height: 40px;
  border-radius: 6px;
  position: relative;
}
.slider-captcha .slider {
  width: 40px;
  height: 40px;
  background: #4CAF50;
  border-radius: 6px;
  position: absolute;
  left: 0;
  top: 0;
  cursor: pointer;
  transition: background 0.3s;
}
.slider-captcha .slider.active {
  background: #388E3C;
}
.slider-captcha .message {
  margin-top: 5px;
  font-size: 14px;
  color: #4CAF50;
}