:root, html, body {
  height: 100%;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  color: var(--fg-color, #DDD);
  background-color: var(--bg-color, #000);
  font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif
}

* {
  box-sizing: border-box;
}

header {
  height: 25px;
  width: 100%;
  overflow: hidden;
}

header > .content {
  height: calc(100%);
  width: 900px;
  margin: 0 auto;
  padding: 5px;
  font-size: 0.8rem;
}

main {
  height: calc(100% - 25px - 25px);
  width: 100%;
  text-align: center;
}

main > .content {
  height: 100%;
  width: 900px;
  margin: 0 auto;
  padding: 5px;
  font-size: 1rem;
  overflow: auto;
}

footer {
  height: 25px;
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
}

footer > .content {
  height: calc(100%);
  width: 900px;
  margin: 0 auto;
  padding: 5px;
  text-align: center;
  font-size: 0.8rem;
}

/* link */

a[href] {
  color: var(--link-color, #AAA);
}

a[href]:visited {
  color: var(--link-color-visited, #999);
}

a[href]:hover {
  color: var(--link-color-hover, #BBB);
}

a[href]:focus {
  color: var(--link-color-focus, #CCC);
}

a[href]:active {
  color: var(--link-color-active, #DDD);
}

/* form */

input[type="text"] {
  width: 300px;
  padding: 6px;
  margin: 4px 0;
  background: #1e1e1e;
  color: #fff;
  border: 1px solid #444;
}

button {
  padding: 6px 12px;
  margin-top: 6px;
  background: #333;
  color: #fff;
  border: 1px solid #555;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background: #444;
}

/* position */

.vcenter {
  position: relative;
  top: 50%; 
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
}

/* error */

main .error {
  background-color: #333;
  border: 2px solid #F00;
}

/* #Main */

#Main {
  height: 100%;
  width: 420px;
  margin: 0 auto;
  padding: 0;
}

#Main #Title {
  width: 420px;
  margin: 0 auto;
  padding: 0;
  font-size: 50px;
  color: #DDDDDD;
  font-family: 'SFMono-Regular', Consolas, Liberation Mono, Menlo, monospace;
}

/* EOF */