body {
  text-align: center;
  background-color: cyan;
  background-image: linear-gradient(45deg, #e0e0e0 25%, transparent 25%, transparent 75%, #e0e0e0 75%, #e0e0e0),
                    linear-gradient(45deg, #e0e0e0 25%, transparent 25%, transparent 75%, #e0e0e0 75%, #e0e0e0);
  background-size: 50px 50px;
  background-position: 0 0, 25px 25px;
}

h1 {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 2.5em;
}

.video {
  padding-bottom: 2em;
  border-bottom: black solid 1px;
  border-radius: 100px;
}