form {
  background: white;
  padding: 20px 20px 20px 20px;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
  transition: 0.3s;
  margin-left: auto;
  margin-right: auto;
}
main {
  height:450px;
  animation: ShowMain 0.8s ease-out forwards;
}
form:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

input, textarea {
  width: 91%;
  padding: 12px 15px;
  margin: 10px 0 20px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 16px;
  transition: border 0.3s, box-shadow 0.3s;
  background: #fafafa;
}

input:focus, textarea:focus {
  border-color: #007bff;
  box-shadow: 0 0 5px rgba(0, 123, 255, 0.3);
  background: #fff;
  outline: none;
}

button {
  width: 100%;
  background: #007bff;
  color: white;
  border: none;
  padding: 12px 0;
  border-radius: 8px;
  font-size: 18px;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background: #0056b3;
}

#response {
  margin-top: 15px;
  font-size: 16px;
  text-align: center;
  color: green;
}

@media (max-width: 767px) {
  form {
    background: white;
    padding: 20px 20px 20px 20px;
    border-radius: 16px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    transition: 0.3s;
    margin-left: -20px;
  }
}