body {
  font-family:Arial,Helvettica,sans-serif;
  background-color:black;
}

h1 {
  font-size:4em;
  margin:20px;
  padding:20px;
  color:white;
  width:80%;
  margin-right:auto;
  margin-left:auto;
}

.main {
  width:80%;
  background-color:black;
  color:white;
  margin-right:auto;
  margin-left:auto;
  padding:10px;
  overflow:hidden;
}

footer {
  width:80%;
  background-color:black;
  color:white;
  margin-right:auto;
  margin-left:auto;
  height:50px;
  padding:10px;
}

video {
  width: "640";
  height: "360";
}