.banner {
  width: 100%;
}
.banner.bg {
  position: relative;
}
.banner #form {
  position: absolute;
  top: 14%;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  padding: 0 2rem;
  box-sizing: border-box;
}
.banner #form .form-item {
  width: 100%;
  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: 70%;
  border: 0;
  background-color: transparent;
  width: 65%;
  font-size: 1rem;
}
.banner #form .form-item textarea {
  position: absolute;
  bottom: 5%;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  height: 60%;
  border: 0;
  background-color: transparent;
  font-size: 1rem;
}
.banner #form .tip {
  margin: 1rem 0 0;
  text-align: center;
  font-size: 1rem;
  color: #28a082;
}
.banner #form .img-btn {
  margin: 1.5rem auto 0;
  width: 12.5rem;
}
@media (min-width: 768px) {
  .banner #form .img-btn {
    zoom: 1.5;
  }
}