html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  background-color: #F8F8F8;
}

.vertical-center {
  min-height: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.time-output {
  padding-top: 25px;
  min-height: 50px;
}

#article {
  padding: 10% 10% 1%;
}