.banner {
  width: 100%;
  position: relative;
}
.banner #form {
  position: absolute;
  bottom: 0.5rem;
  left: 50%;
  transform: translateX(-50%);
}
.banner #form .form-item {
  width: 16.5625rem;
  position: relative;
}
.banner #form .form-item:nth-child(n+2) {
  margin-top: 0.75rem;
}
.banner #form .form-item input {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  height: 1rem;
  border: 0;
  background-color: transparent;
  width: 10.625rem;
}
.banner #form .form-item textarea {
  position: absolute;
  top: 1.75rem;
  left: 0.5rem;
  width: 15.125rem;
  height: 2.5rem;
  border: 0;
  background-color: transparent;
}
.banner #form .tip {
  margin-top: 0.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: #fff;
}
.banner #form .img-btn {
  margin: 0.5rem auto 0;
  width: 6.25rem;
}
@media (min-width: 768px) {
  .banner #form {
    zoom: 1.7;
  }
}