@charset "UTF-8";

body {
  background-color: #ffaad1;
}

main {
  width: 600px;
  height: auto;
  box-sizing: inherit;
  margin: 0 auto;
  flex: 1; /* footerを下部に固定 */
　}

.btn{
  display: flex;
}

  @media screen and (max-width: 600px) {
    main {
      width: 100%;
    }
  }