.modal {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 9999;
}
.modal.show {
  display: block;
}
.modal-content {
  position: relative;
  margin: 10% auto;
  padding: 20px;
  width: 320px;
  background-color: #fff;
  border-radius: 8px;
}
.close-signup {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 24px;
  font-weight: bold;
  color: #999;
  cursor: pointer;
}
.modal-content form input {
  width: 100%;
  margin-bottom: 10px;
  padding: 10px;
  font-size: 14px;
}
.modal-content form button {
  width: 100%;
  padding: 10px;
  background-color: #007bff;
  border: none;
  color: white;
  font-size: 16px;
  cursor: pointer;
  border-radius: 4px;
}