@charset "utf-8";
body {
  background-image: url('image/desktop.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  height: 100vh;
  margin: 0;
  font-family: system-ui, sans-serif;
}

@media (max-width: 767px) {
  body {
    background-image: url('image/phone.jpg');
  }
}

form {
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
}