style.css

body {
  font-family: 'myriad pro', sans-serif;
  font-size: 20px;
  border: 0;
  background: rgba(64, 139, 194, .2);
  margin: 0;
  padding: 100px;
}

timer {
  display: block;
  max-width: 300px;
  margin: 0 auto;
  border: 1px solid rgba(64, 139, 194, .5);
  border-radius: 6px;
  color: rgba(64, 139, 194, 1);
  height: 100px;
  line-height: 100px;
  text-align: center;
  background: white;
}
p {
  margin: 0;
}