html,body {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  color:#FFF;
  background-color:black;
  font-family: "Lucida Sans", "Lucida Sans Regular", "Lucida Grande", "Lucida Sans Unicode", Geneva, Verdana, sans-serif;
  font-size: 1em;
}

.content {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.content>* {
  flex: 0 0 auto;
}

.footer {
  position:fixed;
  bottom:0;
  right: 0;
  left: 0;
  padding:6px;
  font-size: x-small;
  color: rgba(255,255,255,0.5);
  text-align: center;
  line-height: 16px;
}