body {
    color: #404040;
    background-color: #8D99A1;
    font-family: "Lato", "Noto Sans JP", sans-serif;
  }

  main {
    padding: 80px;
  }

  .top_logo {
    width: 340px;
    height: 95px;
  }
  .top_since {
    font-size: 16px;
    margin-top: 40px;
  }

  footer {
    position: fixed;
    bottom: 40px;
    left: 40px;
  }
  .top_copyright {
    font-size: 11px;
    letter-spacing: .05em;
    opacity: 0.55;
  }