html {
  background-color: black;
}

div {
  display: block;
  font-family: Verdana;
  color: white;
  margin: 20px auto;
}

h1 {
  display: block;
  padding: 20px 0;
  color: white;
  text-shadow: 3px 3px 1px grey;
}

img {
  display: block;
}

iframe {
  display: block;
  margin: 20px auto;
  width: 800px;
  max-width: 100%;
  padding: 20px 20px 20px 20px;
  border-style: solid;
  border-color: red green blue yellow; /*Top Right Bottom Left*/
  background-color: #000000;
}


.center{
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.centertext{
  text-align: center;
}

.boxed{
  text-align: center;
  display: block;
  margin: 10px auto;
  background-color: black;
  color: white;
  border-style: solid;
  max-width: 20%;
  padding: 5px 0px 5px 0px
}