:root {
    --bg: #1d1f21;
    --bg-light: #2a2c2e;
    --accent-bg: #4f759b;
    --text: #cad8de;
    --text-light: #ccfaff;
    --accent: #fde74c;
    --accent-hover: #fffb7f;
    --accent-text: var(--bg);
    --code: #c3423f;
    --preformatted: #ccc;
    --disabled: #111;
    --sans-font: -apple-system, BlinkMacSystemFont, "Avenir Next", Avenir,
    "Nimbus Sans L", Roboto, "Noto Sans", "Segoe UI", Arial, Helvetica,
    "Helvetica Neue", sans-serif;
  --mono-font: Consolas, Menlo, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
  --standard-border-radius: 5px;

  }
    html {
        font-size: 16px;
        font-family: var(--sans-font);
        line-height: 1.5;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        -webkit-text-size-adjust: 100%;
        background-color: var(--bg);
        color: var(--text);
        border: 0;
        margin: 0;
        padding: 0;
    }

  body {
    border: 0;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-text-size-adjust: 100%; /* prevent Mobile Safari from adjusting font sizes */
  }

  header {
    height: 135px;
    max-height: 140px;
    background: var(--accent-bg);
    width: 100%;
    text-align: center;
  }

  main {
    clear: both;
    height: calc(100vh - 260px);
    margin: auto;
    width: 90%;
    text-align: center;
    margin-bottom: 120px;
    overflow-y: auto;
  }

  main::after {
    content: "";
    display: table;
    clear: both;
  }

  main section#one {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 350px;
    height: 350px;
    margin: -175px 0 0 -175px;
    text-align: center;

  }
   

  p.instructions {
    text-align: center; 
  }


  footer {
    display: block;
    clear: both;
    background: var(--bg-light);
    color: var(--text);
    padding: 1rem;
    text-align: center;
    font-size: 0.8rem;
    font-family: var(--sans-font);
    position: fixed;
    width: 100%;
    bottom: 0;
  }


  a {
    color: var(--accent);
    text-decoration: none;
  }

  a:hover {
    color: var(--accent-hover);
  }
  
  h1 {
      font-family: 'Solway', serif;
  }
  

  label {
    font-size: 1.5rem;
    color: var(--text);
    text-align: center;
    display: block;
    margin: 0 auto;
  }

  input {
    font-size: 1.5rem;
    color: var(--text);
    text-align: center;
    display: block;
    margin: 0 auto;
    padding: 0.5rem;
    border-radius: var(--standard-border-radius);
    background-color: var(--bg-light);
    border: 1px solid var(--text);
  }

  .error {
    color: var(--code);
    font-size: 1.5rem;
    text-align: center;
    display: block;
    margin: 0 auto;
  }

  .download path#bp {
    fill: #333;
  }

  .aa, .aa a, .aa path#bp {
    color: #9bc53d;
    stroke: #9bc53d;
  }
  
  .bb, .bb a, .bb path#bp {
    color: #fde74c;
    stroke: #fde74c;
  }
  
  .cc, .cc a, .cc path#bp {
    color: #933fc3;
    stroke: #933fc3;
  }

  .dd, .dd a, .dd path#bp {
    color: #4c3fc3;
    stroke: #4c3fc3;
  }

  .ee, .ee a, .ee path#bp {
    color: #c3423f;
    stroke: #c3423f;
  }

  .downloads {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    width: 99%;
    clear: both;
    margin: auto auto 4em auto;

  }

  .download {
    flex: 0 0 33.3333%;
    display: inline-block;
    margin: 0 auto 2rem auto;
    text-align: center;
  }
  
  .download a {
    display: inline-block;
    width: 240px;
    height: 240px;
    text-decoration: none;
  }


  .download a.button,
  .button {
    height: auto;
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--accent);
    color: var(--accent-text);
    text-decoration: none;
    font-size: 1.5rem;
    font-family: 'Solway', serif;
    border-radius: var(--standard-border-radius);
    transition: all 0.3s ease-in-out;
  }
  
  .arduino .button,
  .arduino.download a.button {
    margin-top: 1.5em;
  }

  .download span {
    width: 100%;
    position: relative;
    display: block;
    font-size: 2rem;
    top: 60%;
    width: 100%;
    text-align: center;
    font-variant: small-caps;
    font-family: 'Solway', serif;
  }
  
  img.disk {
    width: 240px;
    height: 240px;
  }