body {
  font-family: Arial, sans-serif;
  text-align: center;
  overflow: hidden;
}

#time {
  font-size: 48px;
  margin: 20px 0;
}

button {
  font-size: 24px;
  padding: 10px 20px;
  margin: 0 10px;
}

.footer {
  font-size: 1.2em;
  padding: 10px;
  float: left;
  position: absolute;
  bottom: 0;
  width: 100%;
  text-align: center;
  background-color: #2f2f2f;
  color: #fff;
}