body {
  margin: 0;
  background-color: #4287f5;
}

.block {
  position: absolute;
}

.vid {
  position: absolute;
}

.container {
  width: 100%;
  height: 1920px;
  position: absolute;
}

.header {
  width: 100%;
  height: 50px;
  background-color: black;
  position: absolute;
  z-index: 500;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

#thing {
  margin-top: 50px;
}

#container {
  width: 100%;
}

#clickme {
  text-align: center;
}