html, body {
    align-items: center;
    background: #f2f4f8;
    border: 0;
    display: flex;
    font-family: Helvetica, Arial, sans-serif;
    font-size: 16px;
    height: 100%;
    justify-content: center;
    margin: 0;
    padding: 0;
  }
  
  form {
    --background: white;
    --border: rgba(0, 0, 0, 0.125);
    --borderDark: rgba(0, 0, 0, 0.25);
    --borderDarker: rgba(0, 0, 0, 0.5);
    --bgColorH: 0;
    --bgColorS: 0%;
    --bgColorL: 98%;
    --fgColorH: 210;
    --fgColorS: 50%;
    --fgColorL: 38%;
    --shadeDark: 0.3;
    --shadeLight: 0.7;
    --shadeNormal: 0.5;
    --borderRadius: 0.125rem;
    --highlight: #306090;
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--borderRadius);
    box-shadow: 0 1rem 1rem -0.75rem var(--border);
    display: flex;
    flex-direction: column;
    padding: 1rem;
    position: relative;
    overflow: hidden;
  }
  
  form .email, form .email a {
    color: hsl(var(--fgColorH), var(--fgColorS), var(--fgColorL));
    font-size: 0.825rem;
    order: 4;
    text-align: center;
    margin-top: 0.25rem;
    outline: 1px dashed transparent;
    outline-offset: 2px;
    display: inline;
  }
  
  form a:hover {
    color: hsl(var(--fgColorH), var(--fgColorS), calc(var(--fgColorL) * 0.85));
    transition: color 0.25s;
  }
  
  form a:focus {
    color: hsl(var(--fgColorH), var(--fgColorS), calc(var(--fgColorL) * 0.85));
    outline: 1px dashed hsl(var(--fgColorH), calc(var(--fgColorS) * 2), calc(var(--fgColorL) * 1.15));
    outline-offset: 2px;
  }
  
  form > div {
    order: 2;
  }
  
  label {
    display: flex;
    flex-direction: column;
  }
  
  .label-show-password {
    order: 3;
  }
  
  label > span {
    color: var(--borderDarker);
    display: block;
    font-size: 0.825rem;
    margin-top: 0.625rem;
    order: 1;
    transition: all 0.25s;
  }
  
  label > span.required::after {
    content: "*";
    color: #dd6666;
    margin-left: 0.125rem;
  }
  
  label input {
    order: 2;
    outline: none;
  }
  
  label input::placeholder {
    color: var(--borderDark);
  }
  
  /* trick from https://css-tricks.com/snippets/css/password-input-bullet-alternatives/ */
  label input[name="password"] {
    -webkit-text-security: disc;
  }
  
  input[name="show-password"]:checked ~ div label input[name="password"] {
    -webkit-text-security: none;
  }
  
  label:hover span {
    color: hsl(var(--fgColorH), var(--fgColorS), var(--fgColorL));
  }
  
  input[type="checkbox"] + div label:hover span::before,
  label:hover input.text {
    border-color: hsl(var(--fgColorH), var(--fgColorS), var(--fgColorL));
  }
  
  label input.text:focus,
  label input.text:active {
    border-color:  hsl(var(--fgColorH), calc(var(--fgColorS) * 2), calc(var(--fgColorL) * 1.15));
    box-shadow: 0 1px  hsl(var(--fgColorH), calc(var(--fgColorS) * 2), calc(var(--fgColorL) * 1.15));
  }
  
  input.text:focus + span,
  input.text:active + span {
    color:  hsl(var(--fgColorH), calc(var(--fgColorS) * 2), calc(var(--fgColorL) * 1.15));
  }
  
  input {
    border: 1px solid var(--border);
    border-radius: var(--borderRadius);
    box-sizing: border-box;
    font-size: 1rem;
    height: 2.25rem;
    line-height: 1.25rem;
    margin-top: 0.25rem;
    order: 2;
    padding: 0.25rem 0.5rem;
    width: 15rem;
    transition: all 0.25s;
  }
  
  input[type="submit"] {
    color: hsl(var(--bgColorH), var(--bgColorS), var(--bgColorL));
    background: hsl(var(--fgColorH), var(--fgColorS), var(--fgColorL));
    font-size: 0.75rem;
    font-weight: bold;
    margin-top: 0.625rem;
    order: 4;
    outline: 1px dashed transparent;
    outline-offset: 2px;
    padding-left: 0;
    text-transform: uppercase;
  }
  
  input[type="checkbox"]:focus + label span::before,
  input[type="submit"]:focus {
    outline: 1px dashed hsl(var(--fgColorH), calc(var(--fgColorS) * 2), calc(var(--fgColorL) * 1.15));
    outline-offset: 2px;
  }
  
  input[type="submit"]:focus {
    background: hsl(var(--fgColorH), var(--fgColorS), calc(var(--fgColorL) * 0.85));
  }
  
  input[type="submit"]:hover {
    background: hsl(var(--fgColorH), var(--fgColorS), calc(var(--fgColorL) * 0.85));
  }
  
  input[type="submit"]:active {
    background: hsl(var(--fgColorH), calc(var(--fgColorS) * 2), calc(var(--fgColorL) * 1.15));
    transition: all 0.125s;
  }
  
  /** Checkbox styling */
  .a11y-hidden {
    position: absolute;
    top: -1000em;
    left: -1000em;
  }
  
  input[type="checkbox"] + label span {
    padding-left: 1.25rem;
    position: relative;
  }
  
  input[type="checkbox"] + label span::before {
    content: "";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 0.75rem;
    height: 0.75rem;
    border: 1px solid var(--borderDark);
    border-radius: var(--borderRadius);
    transition: all 0.25s;
    outline:1px dashed transparent;
    outline-offset: 2px;
  }
  
  input[type="checkbox"]:checked + label span::after {
    content: "";
    display: block;
    position: absolute;
    top: 0.1875rem;
    left: 0.1875rem;
    width: 0.375rem;
    height: 0.375rem;
    border: 1px solid var(--borderDark);
    border-radius: var(--borderRadius);
    transition: all 0.25s;
    outline:1px dashed transparent;
    outline-offset: 2px;
    background: hsl(var(--fgColorH), var(--fgColorS), var(--fgColorL));
  }