@media only screen and (min-device-width: 320px) and (max-device-width: 480px) {
  html {
    margin: 0.5rem 0.5rem;
  }

  header {
    text-align: center;
    padding: 0;
    margin: 0;
  }

  header #title {
    font-size: 2.8rem;
    line-height: 3.2rem;
    padding: 0;
    margin: 1rem 0;
  }

  header #description {
    font-size: 1.6rem;
    line-height: 2.2rem;
    margin: 1rem 0;
  }

  hr {
    margin: 0;
  }

  main {
    font-size: 1.6rem;
  }

  .container {
    height: 100%;
    align-content: start;
    margin: 0rem 2rem 5rem 0rem;
    flex-direction: column;
    width: 100%;
  }

  .mainContainer {
    margin-bottom: -5rem;
  }

  .item1,
  .item2,
  .item3 {
    box-sizing: border-box;
    text-align: left;
    width: 100%;
  }

  .item1 {
    margin-top: 2rem;
    padding: 1rem;
  }

  .item2 {
    margin: 0;
    padding: 0;
  }

  #space {
    padding: 0 0 1.5rem 0;
  }

  .item3 p {
    text-align: left;
    padding: 0 0.5rem 0 0.5rem;
    margin: 0 0 0 0;
  }

  .typeA {
    text-align: left;
    padding: 0 0 1rem 0;
    margin: 0;
  }

  #test1 {
    background-color: skyblue;
  }

  .item2 label {
    width: 20rem;
  }

  label {
    display: block;
    padding-left: 0rem;
  }

  input[type="text"],
  input[type="number"],
  input[type="email"],
  #dropdownMenu {
    float: left;
    margin: 0 10rem 0 0;
    width: 30rem;
  }

  #textarea {
    width: 100%;
    padding: 1rem;
    margin: 0;
  }

  #submit {
    padding: 1rem 5rem;
    width: 20rem;
  }

  .typeB {
    padding: 0;
    margin-bottom: 2rem;
    width: 100%;
    text-align: center;
  }
}