body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  text-align: center;
  background-color: #000;
  background-image: url('logo.svg');
  background-repeat: no-repeat;
  background-position: center 0%;
  background-attachment: fixed;
  background-size: 500px auto;
  color: #fff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  padding: 250px 20px 60px;
  background-color: rgba(0, 0, 0, 0.6);
  display: inline-block;
  width: 100%;
  max-width: 600px;
  border-radius: 10px;
  z-index: 1;
  margin: 0 auto;
}

footer {
  margin-top: auto;
  padding: 20px;
  font-size: 0.9em;
  color: #aaa;
  background: rgba(0, 0, 0, 0.8);
}

footer a {
  color: #fff;
  text-decoration: none;
  margin: 0 5px;
}

form {
  margin-top: 20px;
}

input[type="text"],
input[type="email"] {
  padding: 10px;
  height: 44px;
  width: 100%;
  max-width: 300px;
  margin: 5px auto;
  display: block;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  box-sizing: border-box;
}

button {
  padding: 10px 20px;
  height: 44px;
  font-size: 16px;
  background-color: #d00;
  color: #000;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin-top: 10px;
}

@media screen and (max-width: 600px) {
  body {
    background-size: 90% auto;
    background-position: center 0%;
  }

  main {
    padding: 220px 15px 50px;
    background-color: rgba(0, 0, 0, 0.5);
  }

  input[type="text"],
  input[type="email"],
  button {
    width: 90%;
    max-width: none;
  }
}